Question

Simplify the following expression.
7x - 4y + 5z - 2x - 10y + z

A) 5x - 14y + 6z

B) 9x - 14y + 6z

C) 5x - 6y + 6z

D) 9x - 6y + 6z

Answer 1

A) 5x - 14y + 6z

You add the numbers together that have the same letter. 

EX: 7x - 2x = 5x

Answer 2

(7x - 2x) + (-10y -4y) + (5z + z) =5x - 14y + 6z
A is the correct answer