Question

1. Simplify the following expression.

I think the answer is -5y + 5z

3x − 4y + 3z − 3x − y + 2z

6x − 5y + 5z
−5y + 5z
6x − 5y + 6z
−5y + 6z

2. Which of the following expressions could be simplified further?
I think the answer is 6x - 7m + 9x, but I'm not positive.

2x + 3m + 7n + 4z − 5p
6x − 7m + 9x
4x + 3m − 5z + 8a
2x + 3m − 5y + 4z

Answer 1

What you want to do is to first rearrange the equation so that it has similar letters next to each other:
3x- 4y +3z- 3x- y+ 2z
=3x- 3x -4y -y +3z +2z

then you just count the result for each letter separately:
= (3-3)x + (-4-1)y + (3+2)z
=0x + (-5)y +(5)z
=-5y+5z

Answer 2

understood?

Answer 3

I really believe its 2 because you can just add the 6x and the 9x and it wont and the result will be the same.

Answer 4

any more questions?

Answer 5

Nope, thanks for the help! I'm no that good at math... :P

Answer 6

ok. Bye. good luck