12=a-8

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Solution for 12=a-8 equation:


Simplifying
12 = a + -8

Reorder the terms:
12 = -8 + a

Solving
12 = -8 + 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.
12 + -1a = -8 + a + -1a

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

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

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

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

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

Simplifying
a = 20

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