-72=-6a

Solution for -72=-6a equation:

Simplifying
-72 = -6a

Solving
-72 = -6a

Solving for variable 'a'.

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

Add '6a' to each side of the equation.
-72 + 6a = -6a + 6a

Combine like terms: -6a + 6a = 0
-72 + 6a = 0

Add '72' to each side of the equation.
-72 + 72 + 6a = 0 + 72

Combine like terms: -72 + 72 = 0
0 + 6a = 0 + 72
6a = 0 + 72

Combine like terms: 0 + 72 = 72
6a = 72

Divide each side by '6'.
a = 12

Simplifying
a = 12