Vagabond

It really bugs me that someone highlighted and circled this as if they found this ironic error when it was written as a joke headline in the first place and it went clear over their head. The equivalent of red circles and arrows on thumbnails

I see what you’re getting at but the issue isn’t really the assumed multiplication symbol and it’s priority. It’s the fact that when there is implicit multiplication present in an algebraic expression, and really best practice for any math above algebra, you should never use the ‘÷’ symbol. You need to represent the division as a numerator and denominator which gets rid of any ambiguity since the problem will explicitly show whether (2+2) is modifying the numerator or denominator. Honestly after 7th grade I can’t say I ever saw a ‘÷’ being used and I guess this is why.

That said, I’ll die on a hill that this is 16.

Ah sorry just realized what you were saying. I’ve never been taught that. Maybe it’s just a difference in teaching styles, but it shouldn’t be since it can actually change the outcome. The way I was always taught was if you see a number butted up against an expression in parentheses you assume there is a multiplication symbol there.

So you were taught that 2(2+2) == (2(2+2))
I was taught 2(2+2)==2*(2+2)

Interesting difference though because again, assuming invisible parentheses can really change up how a problem is done.

Edit: looks like theshatterstone54’s comment assumed a multiplication symbol as well.

Not quite. It’s true you resolve what’s inside the parentheses first, giving you. 8÷2(4) or 8÷2x4.
Now this is what gets most people. Even though Multiplication technically comes before Division the Acronym PEMDAS, that’s really just to make it sound correct phonetically. Really they have equal priority in the order of operations and the appropriate way to resolve the problem is to work from left to right solving each multiplication or division sign as you encounter them. Giving you 16. Same for addition and subtraction.

So basically the true order of operations is:

1. Work left to right solving anything inside parentheses
2. Work left to right solving any exponentials
3. Work left to right solving any multiplication or division
4. Work left to right solving any addition or subtraction

Source: Mechanical Engineering degree so an unfortunate amount of my life spent in math and physics classes.

8÷2(2+2) comes out to 16, not 1.

Saw it posted on Instagram or Facebook or somewhere and all of the top comments were saying 1. Any comment saying 16 had tons of comments ironically telling that person to go back to first grade and calling them stupid.

Albatross and Nautilus. Not really sure why, just like the sound of the words and the nautical theme. I still have 2 or 3 laying around unnamed because I haven’t thought of any good words that fit the theme

Definitely. I posted on r/DIY with a picture of a ceiling I was patching in my house. My house is old and I wasn’t familiar with the construction style of my ceiling. I was already well into the job: light fixture removed, ceiling joists exposed, new sheetrock going up. But I wanted to know what the old construction material was and if it was known for being hazardous. So I posted a picture of a chunk from the ceiling with my clearly-already-very-much-started project in the back. Within 15 minutes a mod removed it because “no asking the community how to get started with a project.” I try and fight it but they weren’t having it.

Over the next week I watched so many posts get very popular on the sub with just a picture of a floor, or wall, or bathroom with a title like “thinking of adding outlets to this wall but don’t know how to start. Help.”

Thank god you asked this. It’s been like pulling teeth trying to get google to show anything on any fediverse instance