3(2-3)-12=4(x-5)

Solution for 3(2-3)-12=4(x-5) equation:

3(2-3)-12=4(x-5)

We simplify the equation to the form, which is simple to understand 
3(2-3)-12=4(x-5)

Reorder the terms in parentheses
+(-3)-12=4*(x-5)

Remove unnecessary parentheses
-3-12=+4+*(+x-5+)

Reorder the terms in parentheses
-3-12=+(+4x-20)

Remove unnecessary parentheses
-3-12=+4x-20

We move all terms containing x to the left and all other terms to the right. 
-4x=-20+3+12

We simplify left and right side of the equation. 
-4x=-5

We divide both sides of the equation by -04 to get x. 
x=1.25