9a-12=-111

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Solution for 9a-12=-111 equation: 


Simplifying
9a + -12 = -111

Reorder the terms:
-12 + 9a = -111

Solving
-12 + 9a = -111

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 + 9a = -111 + 12

Combine like terms: -12 + 12 = 0
0 + 9a = -111 + 12
9a = -111 + 12

Combine like terms: -111 + 12 = -99
9a = -99

Divide each side by '9'.
a = -11

Simplifying
a = -11

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