–3x−12 = –12−x This is an equation of finding x

x=0

Step-by-step explanation:

-3x-12=-12-x

add x to the left side

-2x-12=-12

add 12 to the right side

-2x=-12+12

-2x=0

divide both side by -2

x=0

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10