Question

9x-12=3x show your work

Answer 1

9x=3x+12

9x-3x=12

9x-3x=12

6x=12

x=2

solution

x=2

Answer 2

x=2

Explanation:

given 9x-12=3x we want to solve for x

To do so we need to isolate the variable using inverse operations

to get rid of the 9x we subtract each side by 9x

9x - 9x cancels out

3x - 9x =-6x

now we have

-12=-6x

now we want to get rid of the -6

to do so we divide each side by -6

-6x/-6=x

-12/-6=2

we're left with x=2