Question

What is equivalent to the expression 5x - 4 - 9x +7

A. 4x + 3
B. -4x - 3
C. -4x + 3
D. -x
E. x

Answer 1

The answer is c.

5x-9x=-4x
-4+7=3
There for the answer would be -4x+3

Answer 2

5x - 4 -9x + 7
simplify
5x - 9x = -4x

-4 + 7 = 3

Answer: -4x - 3