Question

Simplify the following expression.

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

Answer 1

how many xs do we have in total?

Answer 2

or better yet, it helps to put everything in order:

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

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

then group them

(2x - 2x) (-2y - y) (+5z + 3z) and place + signs between the ()...()

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

then its just a matter of doing the adding and subtracting

Answer 3

Okay so it would be, -3y+8z ?

Answer 4

yes

Answer 5

Thanks (:

Answer 6

yw