Any hints on where I went wrong?
When checking the solution in the original equation, I got the false answer of:
The reason I became confused is, in simplifying equations like
I thought we were supposed to treat the negative sign in the middle as a subtraction sign. I thought we were to solve the two multiplication problems first, then subtract. I could swear I've seen situations that were similar enough in that vein, to confuse me about this situation. If that's the case, I need to learn to tell the difference.
Thankfully, at least the variable was correct this time, so I'm improving.
If your teacher will allow it, this might help:Originally Posted by Euclid Alexandria
When I was learning this my teacher always insisted that we write expressions like as . That way you never have to worry about whether or not you are adding or subtracting...you are ALWAYS adding.
Hope it helps!
I was doing this for a while, but have been trying to wean myself off of it. I still use it for larger problems, but might continue sticking with it for a while in every case.
Btw, I finally noticed my error while resolving that equation, so disregard my previous post!