Question

PLEASE HELP! i will give medal!
Simplify and show work so I can learn
7x+4y+3(x-y)-2x

Justification {Distributive property, commutative property of addition, combine like terms}

Justify your answers!

Answer 1

first distribute: 3*(x-y)=???

Answer 2

3*(x-y)=3x-3y

now we have 7x+4y+3x-3y-2x=combine like terms=y+8x

Answer 3

This is what the problem is, it's in my study guide

Answer 4

Nobody wants to help?? Lol