a+12=-15

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Solution for a+12=-15 equation: 


Simplifying
a + 12 = -15

Reorder the terms:
12 + a = -15

Solving
12 + a = -15

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 = -15 + -12

Combine like terms: 12 + -12 = 0
0 + a = -15 + -12
a = -15 + -12

Combine like terms: -15 + -12 = -27
a = -27

Simplifying
a = -27

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