12-3q-9q=-12

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Solution for 12-3q-9q=-12 equation: 


Simplifying
12 + -3q + -9q = -12

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

Solving
12 + -12q = -12

Solving for variable 'q'.

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

Add '-12' to each side of the equation.
12 + -12 + -12q = -12 + -12

Combine like terms: 12 + -12 = 0
0 + -12q = -12 + -12
-12q = -12 + -12

Combine like terms: -12 + -12 = -24
-12q = -24

Divide each side by '-12'.
q = 2

Simplifying
q = 2

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