9(-4x-4)=-12(6+3x)

Solution for 9(-4x-4)=-12(6+3x) equation:

9(-4x-4)=-12(6+3x)

We simplify the equation to the form, which is simple to understand 
9(-4x-4)=-12(6+3x)

Reorder the terms in parentheses
+(-36x-36)=-12*(6+3x)

Remove unnecessary parentheses
-36x-36=-12+*(+6+3x+)

Reorder the terms in parentheses
-36x-36=+(-72-36x)

Remove unnecessary parentheses
-36x-36=-72-36x

We move all terms containing x to the left and all other terms to the right. 
-36x+36x=-72+36

We simplify left and right side of the equation. 
0x=-36

0=-36

The left and right sides are not equal, therefore there is no solution. This equation is invalid.