12+a=4

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Solution for 12+a=4 equation: 


Simplifying
12 + a = 4

Solving
12 + a = 4

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 + a = 4 + -12

Combine like terms: 12 + -12 = 0
0 + a = 4 + -12
a = 4 + -12

Combine like terms: 4 + -12 = -8
a = -8

Simplifying
a = -8

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