Question

i'm not sure how to do this.

simply expression by combining like terms.

Answer 1

Answer:

x-6y+4z

Step-by-step explanation:

8x+y-9x+3z+2x-7y+z

Answer 2

8x+y-9x+3z+2x-7y+z

So first you wanna group the ones that are the same so 8x-9x+2x so that will give you 1x

Then you do y-7y then that gives you -6y

Then you do 3z+z and that gives you 4z


So the answers is 1x-6y+4z