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1%% Image selected per Image Pickin' thread: https://tvtropes.org/pmwiki/posts.php?discussion=1593876191019612600
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4[[quoteright:350:[[Webcomic/TheAdventuresOfDrMcNinja https://static.tvtropes.org/pmwiki/pub/images/math2.png]]]]
5%%
6->''"We all use the teleporter let's say... six times a day. Times four years. Minus we're not bread."''
7-->-- '''The Medic''', ''WebAnimation/TeamFortress2'', "Expiration Date"
8
9This is when a statement regarding real-world things is expressed as a [[UsefulNotes/{{Mathematics}} mathematical equation]], usually in the form of x + y = z to quickly tell you what you get when you mix x and y. Also common is writing an elaborate deduction on a blackboard or thought bubbles, but replacing a few terms, including the result, with pictures related to whatever the character is scheming.
10
11[[MST3KMantra Try not to think too hard]] about the implications of some of these. For example, JustForFun/QuantumMariahCareyProblem is equal to this trope plus FridgeLogic.
12
13Parallel to EEqualsMCHammer, when used to convey a setting or a character's skills, and may be derivative of WritersCannotDoMath. See also FormulaForTheUnformulable.
14
15Integral to {{JustForFun/Troperithmetic}}. RebusBubble is a subset of this. [[JustForFun/IThoughtItMeant Not]] [[Webcomic/{{xkcd}} what Physics is.]]
16
17----
18!!Examples:
19[[foldercontrol]]
20
21[[folder:Anime and Manga]]
22* Puck has a moment of this in ''Manga/{{Berserk}}'' when he sees Guts collapse. He rushes over to him as he's getting swarmed by weak ghosts, and his wild flailing drives them off. Guts < Monsters, Monsters < Puck, so Puck > Guts.
23[[/folder]]
24
25[[folder:Comic Books]]
26* ''ComicBook/DisneyDucksComicUniverse'': The Don Rosa version of Uncle Scrooge sometimes assembles these in his thought balloons.
27* Creator/BenitoJacovitti, an Italian comic artist, used to draw little comic strips of this type as a gag aside of a main story. Sometimes they were related with verbal jokes (in Italian), sometimes more logical, sometimes nonsenses as in the picture of this entry (bull + lyre = bull with musical strings in the horns). Sometimes he used operations different form the sum: for instance, sqrt{man}= skeleton.
28* ''ComicBook/YoungAvengers'' has [[spoiler: Ghost Kid Loki]]'s description of original Loki: "[[Literature/TheLordOfTheRings Sauron]] multiplied by [[HeWhoMustNotBeNamed that]] [[Literature/HarryPotter anti-Dumbledore guy]] cubed!"
29[[/folder]]
30
31[[folder:Film]]
32* In ''WesternAnimation/TurningRed'', one of the the slides in the presentation of Mei's plan to raise money includes the equation "GOAL=$800".
33[[/folder]]
34
35[[folder:Literature]]
36%%Has been alphabatized, please add new examples in the correct order.
37* ''Literature/TheAliceNetwork'': Charlie often uses mathematical metaphors, which her mother hates.
38-->'''Charlie''': I really don't see that equation balancing out, ''[[GratuitousForeignLanguage Maman]]''.\
39'''Charlie's mother''': What on earth do you mean?\
40'''Charlie''': One college sophomore minus one small encumberance, divided by six months' passage of time, multiplied by ten Paris frocks and a new haircut will not magically equal one restored reputation.
41* ''Literature/{{Discworld}}'':
42** In the novels (but also referring to the real world, and why time can be lost in bookshops): Libraries are collections of books and books contain knowledge. Knowledge = power = energy = matter = mass. "[[Literature/GuardsGuards A good bookshop is a genteel black hole that knows how to read.]]"
43** Camel mathematicians think in these terms.
44--->''"Let legs equal four..."''
45** The eighth son of an eighth son will always be a wizard. The eighth son of an eighth son of an eighth son is a wizard squared (and a Sourcerer). Even though FridgeLogic points out that if that's going to be any power of a wizard, it ought to be 3/2. WritersCannotDoMath, or this is a bit like the old question about a double hat-trick: do 4 successive whatevers count as a double hat-trick because there's the first one made up of the first, second and third examples, and a second consisting of the second, third and fourth ones? If so, then the Sourcerer = Wizard^2 argument holds up. An 8th son is just that; it's only when he has an 8th son that said son is a wizard. So it's the extra generation and power of 8 that counts. Doing that ''again'' -- that is, the wizard having an 8th son -- is what makes him a Sourcerer. Put numbers to it: Original 8th son = 1 (un-magical); his 8th son = 8 (wizard); ''his'' 8th son = 64 (Sourcerer, and wizard squared).
46* In Karel Polacek's novel ''Inn at the Stone Table'', one chapter is in part titled "knickerbockers + cameras + overcoats × wives = reunion of alumni".
47* ''In One Era and Out the Other'' by Sam Levenson features his own "theory of relativity": "E = MC: everybody is my mother's cousin twice removed".
48* In ''Literature/AWrinkleInTime'', Mrs. Who uses her skirt and an ant to illustrate her explanation of the tesseract.
49[[/folder]]
50
51[[folder:Live-Action TV]]
52* In ''Series/KenanAndKel'', Kenan uses this trope to explain [[ItMakesSenseInContext why their new classmate is a witch]] by adding the proves on an invisible blackboard. Kel then tells him he can't add things that aren't numbers, and proceeds to erase it from the "blackboard".
53* Used in ''Series/Numb3rs''.
54* In ''Series/ItsAlwaysSunnyInPhiladelphia'', Charlie does this to help develop a new invention after a pharmaceutical experiment convinces him that he's far smarter than he actually is. His invention is a "machine" that allows [[InsaneTrollLogic spiders to talk to cats.]]
55[[/folder]]
56
57[[folder:Music]]
58* The title of Music/BobDylan's song [[Music/BringingItAllBackHome "Love Minus Zero/No Limit"]] is an equation ("Love - 0 / ∞").
59[[/folder]]
60
61[[folder:Video Games]]
62* The first few levels of ''VideoGame/SuperPaperMario'' feature "joke" equations in the background, made up of random numbers and mathematical symbols combined with famous Mario icons such as the Fire Flower and mushrooms.
63* In ''VideoGame/MickeyMania'', when you fight the Mad Doctor, there is a nonsensical equation - featuring Pluto - in the background.
64* ''Alchemy'', a series of games for mobile devices including iOS and Android phones and tablets, starts you off with the four classical elements (earth,air,fire,water) and forces you to apply this trope to find all the rest.
65[[/folder]]
66
67[[folder:Web Comics]]
68* Webcomic/{{xkcd}} is fond of it.
69* ''Webcomic/KoanOfTheDay'' has a guru who is [[http://www.koanoftheday.com/24/ bad at math]].
70* And then there's ''[[http://thisisindexed.com/ Indexed]]''.
71* ''Webcomic/KeychainOfCreation'' brings us [[http://keychain.patternspider.net/archive/koc0285.html this]].
72* From ''Webcomic/DumbingOfAge'': [[http://www.dumbingofage.com/2010/comic/book-1/02-uphill-from-here/notes/ Your mom + Nickel = Prostitute]]
73* ''Webcomic/TheAdventuresOfDrMcNinja'' has [[http://drmcninja.com/archives/comic/17p52 this]].
74* The receptionist angel from ''Webcomic/TheOrderOfTheStick'' graphs [[HeroicComedicSociopath Belkar's]] potential evilness; the unit of measure on the y-axis is "kiloNazis."
75[[/folder]]
76
77[[folder:Web Original]]
78* The title card for WebVideo/TheAngryVideoGameNerd video "Chronologically Confused" features the Nerd in front of a board filled with nonsensical equations and formulae, including at points a Triforce and a drawing of Mario.
79** Of particular note is [[VideoGame/ETTheExtraTerrestrial ET]]=[[TheProblemWithLicensedGames BS]].
80* The Rocketboom series, Know Your Meme, has its own brand, called Mememath.
81* WebVideo/TheNostalgiaChick had the below joke about women equaling time and money therefore they're evil at the start of her "Top Eleven Villainesses."
82* [[WebVideo/WhatTheFuckIsWrongWithYou Nash]] does this sometimes, when talking about a complete and stupid disaster. "Once again, it's time to do the math: This + this equals FUCKING THIS!"
83* ''Website/SCPFoundation'': SCP-1313 is a math equation whose answer is a grizzly bear. Solving the equation causes an angry grizzly bear to manifest.
84[[/folder]]
85
86[[folder:Western Animation]]
87* ''WesternAnimation/DuckDodgers'': Daffy draws a complicated navigation chart to navigate to Planet X, and then Porky suggests they just follow the letters on the planets.
88* ''WesternAnimation/TheSimpsons'':
89** Happens in "The Wizard Of Evergreen Terrace", when Homer is an inventor. During a montage, he's shown writing equations on a blackboard. After he's done, the camera moves to shot of the house ? where there's a massive explosion. Cut back to Homer: who examines his equation and crosses out the offending section, a drawing of a stick of dynamite, which he then replaces with something else. This results in another, ''bigger'' explosion.
90** In "Don't Fear The Roofer", Homer's brain leads to [[https://static.tvtropes.org/pmwiki/pub/images/PresidentHomer_2398.jpg this conclusion]].
91* ''WesternAnimation/SouthPark'':
92** In the episode "Simpsons Already Did It": Cartman's explanation for how adding semen to his tank of "Sea People" (brine shrimp) caused them to develop a civilization: Sea-People + Sea-Men = Sea-Ciety.
93** Underpants Gnomes. Step 1: [[MissingStepsPlan Collect underpants. Step 2: '''?''' Step 3: Profit!]]
94** Cartman's formula for gold.
95* In ''WesternAnimation/PinkyAndTheBrain'', the Brain tries to mathematically deduce the reason his plans usually fail. He ends up with a portrait of Pinky. Later, Pinky is made smarter and finds several mistakes in Brain's calculations. Correcting them results in a portrait of Brain.
96* In ''WesternAnimation/JackieChanAdventures'', Jade references combining the levitation talisman and the speed talisman to fly by saying 'levitation+speed=flight.'
97* In the ''WesternAnimation/PhineasAndFerb'' episode "Out to Launch," Phineas and Ferb are trying to get a rocket to launch using a scientific equation (You can see it starting at [[https://www.youtube.com/watch?v=iu0Nso-mm20 3:18 here]]), and with each new attempt, Phineas modifies one of the terms. After a few false starts, Ferb points out the problem: the equation equals the square root of a bomb. Phineas changes it to a smiley face, and their next launch is successful.
98** 'Tis Tsiolkovsky's equation, the foundation of rocketry!
99** Another episode had Jeremy tell Candace he'd call her soon and Candace decided to calculate out when "soon" was.
100-->'''Candace''': Wait! Maybe I should've carried the one instead of dividing by Jeremy's face.
101* ''WesternAnimation/TheBoondocks'': Nigga Moment + Nigga Synthesis = [[BrickJoke COMPLETE DISASTER]]
102* ''WesternAnimation/CodenameKidsNextDoor'': Operation A.R.C.H.I.V.E, which is an AffectionateParody of ''Anime/TheAnimatrix'', ends with the narrator launching into an erratic rant about fluorescent lights, schools and curfews all being a part of the adult conspiracy to subdue their creators, the children. The rant is accompanied by rapid flashes of increasingly disturbing images, one of which is a chalkboard which says "2 + 2 = Go to Bed".
103* In ''WesternAnimation/TheNightmareBeforeChristmas'', Jack puts a number of these "equations" on a blackboard to try and understand Christmas.
104* ''WesternAnimation/TomAndJerry'': In "The Unshrinkable Jerry Mouse", when Tom's owner brings a new kitten he doesn't want to share the house with, these equations appear in his mind: "house + Tom = heaven" and "house + Tom + kitten = hell".
105[[/folder]]
106
107[[folder:Other]]
108* There's the old joke that goes like this:
109** Getting a girlfriend is the product of time and money. Girlfriend = Time × Money
110** Time = Money, therefore Girlfriend = Money × Money = Money^2
111** Money is the root of all evil, Money = √Evil, meaning Money^2 = Evil
112** Therefore Girlfriend = Evil
113* Counter joke:
114** Boyfriend = Girlfriend × Time × Money
115** Boyfriend = Evil × Money^2
116** Boyfriend = Evil^2
117*** Which would be a recursive formula, meaning boyfriends and girlfriends are infinitely evil.
118* And similarly again:
119** Time is Money, Knowledge is Power: T = $, K=P
120** Power is work per unit time: P=W/T so T =W/P
121** Therefore $=W/K, and since lim (W/K) as K increases tends to zero, the More you know the less you make regardless of how hard you work.
122* [[http://flyingmoose.org/tolksarc/theories/calculus.htm Tolkien as Mathematics]]
123* As Vladimir Lenin put it, communism is the Soviet power plus electrification of the whole country. Therefore, 1) Soviet power is communism without electrification, and 2) electrification is communism minus Soviet power. Important note: this joke is political, and was subject to persecution.
124* An advert about not using a cellphone while driving was portrayed as "driving person + cell phone = walking person". That this logically means "walking person - cell phone = driving person".
125* The rapper Canibus had an interesting equation on his 1000 bar opus "Poet Laureate Infinity" that goes: "If A is a success in life, then A must equal X plus Y plus Z no doubt / If work equals X and play equals Y, then Z must be equal to you shutting your mouth." In fact, this is based on [[https://quoteinvestigator.com/2017/10/03/life-success/ something said by Albert Einstein]].
126* There is a joke about 9/11 which uses this, the humor is not at anyone involved in 9/11, but through a pun and math play.
127-->Q: When does a pentagon only have four sides?
128-->A: When it is bisected by a plane.
129[[/folder]]

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