-2+12=a

Solution for -2+12=a equation:

Simplifying
-2 + 12 = a

Combine like terms: -2 + 12 = 10
10 = a

Solving
10 = 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.
10 + -1a = a + -1a

Combine like terms: a + -1a = 0
10 + -1a = 0

Add '-10' to each side of the equation.
10 + -10 + -1a = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -1a = 0 + -10
-1a = 0 + -10

Combine like terms: 0 + -10 = -10
-1a = -10

Divide each side by '-1'.
a = 10

Simplifying
a = 10