12+2a=-20

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Solution for 12+2a=-20 equation: 


Simplifying
12 + 2a = -20

Solving
12 + 2a = -20

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 2a = -20 + -12

Combine like terms: 12 + -12 = 0
0 + 2a = -20 + -12
2a = -20 + -12

Combine like terms: -20 + -12 = -32
2a = -32

Divide each side by '2'.
a = -16

Simplifying
a = -16

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