72=12(-3x)

Solution for 72=12(-3x) equation:

Simplifying
72 = 12(-3x)

Remove parenthesis around (-3x)
72 = 12 * -3x

Multiply 12 * -3
72 = -36x

Solving
72 = -36x

Solving for variable 'x'.

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

Add '36x' to each side of the equation.
72 + 36x = -36x + 36x

Combine like terms: -36x + 36x = 0
72 + 36x = 0

Add '-72' to each side of the equation.
72 + -72 + 36x = 0 + -72

Combine like terms: 72 + -72 = 0
0 + 36x = 0 + -72
36x = 0 + -72

Combine like terms: 0 + -72 = -72
36x = -72

Divide each side by '36'.
x = -2

Simplifying
x = -2