Question

2x+3y+2(x-y)-3x

simplified, is the answer x+y ?

Answer 1

Yes

Answer 2

@skullpatrol thank you very much, I am supposed to identified the number properties used in my steps. is this correct?

Answer 3

"Combined like terms" should be called the substitution principle.

Answer 4

ok, thanks soo much :) @skullpatrol

Answer 5

Also, when you say 1x = x you are using the identity property of multiplication.