a+12=9

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Solution for a+12=9 equation:


Simplifying
a + 12 = 9

Reorder the terms:
12 + a = 9

Solving
12 + a = 9

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 = 9 + -12

Combine like terms: 12 + -12 = 0
0 + a = 9 + -12
a = 9 + -12

Combine like terms: 9 + -12 = -3
a = -3

Simplifying
a = -3

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