re: Math people, simple algebra, is this person showing their work?(real)

So when you add equations 2 and 3, the A terms cancel out and lets you solve for B.

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why does it have to be a girl??

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It's why I used they and their for gender neutrality

plus it's obviously a guy, you can tell by the scribble scratch, and that no girl would have passed the prerequisites

j/k

Under the Fx equation, he wrote "solve for b" and multiplied both sides of the equation by (.866/.5) so that when adding the new equation 3 to equation 2 the A will cancel out, allowing him to solve for B.

ETA: never mind, others beat me to it. But to add to that, this is a perfectly legit way to solve the problem. Personally I would just use the substitution method you mentioned, but there are a thousand ways to skin a cat in physics.

Why are you posting my answer you squirrelly frick. Mark my shite correct or I will report your sorry teaching assistant arse. You like apples? How you like those apples?

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If you don't have an HP41-CV, you ain't living right baw

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Fixed it for ya.

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Fixed it for ya.

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Lol, I think my dad still has one of those.

(no message)

frick off. I understand it, I just don't like that method. I guess it's easier for slower students though.

I'm great at math. I never took a calculus class. Instead I taught myself from a textbook in my spare time and took the AP test. I made a 5 and never had to take it in college.