Solve for a
a=-\frac{1}{4}=-0.25
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-3=12a
Variable a cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4a.
12a=-3
Swap sides so that all variable terms are on the left hand side.
a=\frac{-3}{12}
Divide both sides by 12.
a=-\frac{1}{4}
Reduce the fraction \frac{-3}{12} to lowest terms by extracting and canceling out 3.
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