-2(3x+15)-12=112+80

Solution for -2(3x+15)-12=112+80 equation:

Simplifying
-2(3x + 15) + -12 = 112 + 80

Reorder the terms:
-2(15 + 3x) + -12 = 112 + 80
(15 * -2 + 3x * -2) + -12 = 112 + 80
(-30 + -6x) + -12 = 112 + 80

Reorder the terms:
-30 + -12 + -6x = 112 + 80

Combine like terms: -30 + -12 = -42
-42 + -6x = 112 + 80

Combine like terms: 112 + 80 = 192
-42 + -6x = 192

Solving
-42 + -6x = 192

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '42' to each side of the equation.
-42 + 42 + -6x = 192 + 42

Combine like terms: -42 + 42 = 0
0 + -6x = 192 + 42
-6x = 192 + 42

Combine like terms: 192 + 42 = 234
-6x = 234

Divide each side by '-6'.
x = -39

Simplifying
x = -39