Question

Which expression is the simplified form of -10 + 3x - x - 7x + 5x + 7 + 2x?

A. 4x-3
B. 2x - 3
C. -18x - 17
D. -X​

Answer 1

B

Explanation:

-10 + 3x - x - 7x + 5x + 7 + 2x

combine like terms

-10 + 3x - x - 7x + 5x + 7 + 2x

-3 + 3x - x - 7x + 5x + 2x

the -7x and the 5x + 2x cancel out to 0, so for the x terms we are left with 3x -x to get 2x

= 2x - 3