717
I dunno (piefed.cdn.blahaj.zone)
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[-] crmsnbleyd@sopuli.xyz 28 points 1 day ago

Let's not do engagement bait here 😭

[-] skisnow@lemmy.ca 12 points 1 day ago

I don't know how we've managed to get to 2025 and there's still apparently people who haven't seen a thousand shit PEMDAS posts already

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[-] Daft_ish@lemmy.dbzer0.com 1 points 1 day ago

You have to subtract the numbers with the most flat sides first and divide by the number of pennies in your sock drawer.

[-] Saapas@piefed.zip 2 points 1 day ago

Something funny about everyone being so eager to show how they can solve this

[-] nialv7@lemmy.world 23 points 2 days ago

Precedences are just made up social constructs, don't let the system restrict you, you can evaluate this expression however you want. Go wild.

[-] Triasha@lemmy.world 77 points 2 days ago

Pemdas, parenthesis first, for a total of 3. Then multiplication, 15, then addition. 17. What's hard about this?

[-] Hawanja@lemmy.world 24 points 2 days ago

What's hard about it is people are fucking stupid.

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[-] baines@lemmy.cafe 25 points 2 days ago

you go the other direction below the equator

[-] Bakkoda@lemmy.world 15 points 2 days ago

Legit gave me pause for like half a second. Damnit lol

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[-] silver_wings_of_morning@feddit.dk 34 points 2 days ago

Any PEMDAS enjoyers in chat?

[-] Karjalan@lemmy.world 18 points 2 days ago

I assume p is for "parentheses", because where I grew up it was BEDMAS, for brackets.

[-] NotSteve_@piefed.ca 3 points 1 day ago

I was taught BEDMAS as well in school (Ontario, Canada)

[-] psud@aussie.zone 1 points 1 day ago* (last edited 1 day ago)

BODMAS or BOMDAS in Australia since we call ordinals ordinals

Brackets have pretty much always been needed to disambiguate precedence between addition and subtraction (which is really all addition) and between multiplication and division

[-] lillardfair@lemmy.world 5 points 1 day ago

Blease Excuse My Dear Aunt Sally

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[-] SSUPII@sopuli.xyz 327 points 3 days ago

I feel like I am getting trolled

Isn't 17 the actual right answer?

[-] NewDark@lemmings.world 166 points 3 days ago
[-] sem@lemmy.blahaj.zone 135 points 3 days ago

So it's just an unfunny meme?

[-] NewDark@lemmings.world 101 points 3 days ago

I think it's meant to play with your expectations. Normally someone's take being posted is to show them being confidently stupid, otherwise it isn't as interesting and doesn't go viral.However, because we're primed to view it from that lens, we feel crazy to think we're doing the math correctly and getting the "wrong answer" from what we assume is the "confident dipshit".

There's layers beyond the superficial.

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[-] marcos@lemmy.world 39 points 2 days ago

Some people insist there's no "correct" order for the basic arithmetic operations. And worse, some people insist the correct order is parenthesis first, then left to right.

Both of those sets of people are wrong.

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[-] banshee@lemmy.world 54 points 2 days ago

I'm sorry but isn't this elementary school math?

[-] BanMe@lemmy.world 14 points 2 days ago

It became a meme a few years ago, people would post problems like this and argue about whose was right, as if there were no objective truth. It hurt to watch.

[-] kuberoot@discuss.tchncs.de 7 points 1 day ago

Arguably, there is no objective truth, since the symbols and rules of mathematics are assigned arbitrarily, and are basically a social contract, just like language!

...Wait, that means there's no objective meaning of "objective", crap

[-] BanMe@lemmy.world 3 points 1 day ago

Well yeah take enough shrooms and everything is suddenly exposed as the artificial construct that it is. But we don't have time to wake up and reinvent language every morning ;)

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[-] DarrinBrunner@lemmy.world 13 points 2 days ago

My education system didn't fail me, I failed it.

[-] vala@lemmy.dbzer0.com 22 points 2 days ago* (last edited 2 days ago)
(* (+ 2 5) (- 8 5))

Hope some LISP can clear this up

Edit:

( + 2 ( * 5 ( - 8 5 ) ) )
[-] yboutros@infosec.pub 21 points 2 days ago

Is this a meme? Shouldn't it be

( + 2 ( * 5 ( - 8 5 ) ) )
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[-] jjjalljs@ttrpg.network 46 points 2 days ago

I got some people really angry at me when I suggested writing some math expression with parenthesis so it would be clearer. I think someone told me that order of operations is like a natural law and not a convention, and thus everyone should know it or be able to figure it out.

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[-] brown567@sh.itjust.works 38 points 2 days ago

2 5 8 5 - × + for you RPN fans =)

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[-] ViperActual@sh.itjust.works 14 points 2 days ago

2+5(8-5)

For anyone wanting to see a different way of solving it with distribution:

2+58-55 2+40-25 42-25 17

So long as you follow the basic math rules, you can solve it in many different ways to get the same result.

[-] Khanzarate@lemmy.world 14 points 2 days ago

Worth a reminder that *'s get converted to italics. At first I saw the 2+58-55 and was very concerned for your education.

[-] sin_free_for_00_days@sopuli.xyz 9 points 2 days ago

With formatting fixed:

2+5*8-5*5
2+40-25
42-25
17
[-] ViperActual@sh.itjust.works 1 points 1 day ago

Haha thanks, totally forgot about the markdown

[-] Truscape@lemmy.blahaj.zone 87 points 3 days ago* (last edited 3 days ago)

Presuming PEMDAS is our order of operations and the 5 next to the parentheses indicates multiplication...

2+5(8-5) -> 2+5(3) -> 2+15=17

Other than adding a multiplication indicator next to the left parentheses for clarification (I believe it's * for programming and text chat purposes, a miniature "x" or dot for pen and paper/traditional calculators), this seems fine, yeah.

...I worry about how many people may not understand how to solve equations like these.

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this post was submitted on 27 Nov 2025
717 points (91.3% liked)

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