-(a-8)=12

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Solution for -(a-8)=12 equation: 


Simplifying
-1(a + -8) = 12

Reorder the terms:
-1(-8 + a) = 12
(-8 * -1 + a * -1) = 12
(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 = 4
-1a = 4

Divide each side by '-1'.
a = -4

Simplifying
a = -4

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