Respuesta :

Titan041
so we will start by distributing. so we get 3x-12 = 12x
Then subtract 3x on both sides
-12= 9x
Then divide by 9
so we will end with
x= -12/9 or -1 1/3

3(x-4)=12x

multiply the bracket by 3

(3)(x)=3x

(3)(-4)=-12

3x-12=12x

move 3x to the other side

sign changes from +3x to -3x

3x-3x-12=12x-3x

3x-3x-12=9x

0-12=9x

-12=9x

divide both sides by 9 to get x by itself

-12/9=9x/9

-12/9 - reduce fraction by dividing by 3

-12/3=-4

9/3=3

answer:

x=-4/3 and x=-1 1/3