Question

how do you simplify 2x-2y+5z-2x-y+3z

Answer 1

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-equivalent-expressions/v/combining-like-terms

This should help you out.

Answer 2

you can only simplify like terms
so bring like terms together
that is

2x - 2x -2y - y +5z + 3z


so for example 5z + 3z = 8z

now do same for terms in x and y

Answer 3

2x - 2y + 5z - 2x - y + 3z
- 2y + 5z - y + 3z (2x-2x=0)
- 2y + 8z - y (3z+5z=8z)
- 3y + 8z (-2y-y)
8z - 3y.

Answer 4

2x-2y+5z-2x-y+3z
collect like terms
5z+3z-2y-y+2x-2x
2x-2x will cancel out
therefore 5z+3z-2y-y=8z-3y .