Question

Which expression is equivalent to -2x + 5 ?

10 - 4x - 5 + 2x
3(2x + 1) - x - 1
3x + 5 - x - 10
–x - 9 + 4x + 4

Answer 1

Explanation:

the first one

10 - 4x - 5 + 2x

-4x + 2x = -2x

10 - 5 = 5

so, in sum,

-2x + 5