-6=a-12

Solution for -6=a-12 equation:

Simplifying
-6 = a + -12

Reorder the terms:
-6 = -12 + a

Solving
-6 = -12 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-6 + -1a = -12 + a + -1a

Combine like terms: a + -1a = 0
-6 + -1a = -12 + 0
-6 + -1a = -12

Add '6' to each side of the equation.
-6 + 6 + -1a = -12 + 6

Combine like terms: -6 + 6 = 0
0 + -1a = -12 + 6
-1a = -12 + 6

Combine like terms: -12 + 6 = -6
-1a = -6

Divide each side by '-1'.
a = 6

Simplifying
a = 6