8-a=-12

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Solution for 8-a=-12 equation: 


Simplifying
8 + -1a = -12

Solving
8 + -1a = -12

Solving for variable 'a'.

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

Add '-8' to each side of the equation.
8 + -8 + -1a = -12 + -8

Combine like terms: 8 + -8 = 0
0 + -1a = -12 + -8
-1a = -12 + -8

Combine like terms: -12 + -8 = -20
-1a = -20

Divide each side by '-1'.
a = 20

Simplifying
a = 20

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