Factor the common factor out of -12+15x

Answer 1

I think you meant to say "FIND THE COMMON FACTOR OF -12 + 15X.

-12 + 15X = (3) (-4 + 5X)

The common factor is 3.

Answer 2

12 = 3 x 4

15 = 3 x 5

The common factor is 3.

-12 + 15x = -(3)(4) + (3)(5)x = 3(-4 + 5x)

Answer 3

So the question is what number(s) 12 and 15 have in common. In this case, that would be 3:

-12 / 3 = -4

15 / 3 = 5

That factoring leads to:

3(5x - 4)