Solve for a
a = \frac{21}{2} = 10\frac{1}{2} = 10.5
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147-14a=0
Multiply both sides of the equation by 3.
-14a=-147
Subtract 147 from both sides. Anything subtracted from zero gives its negation.
a=\frac{-147}{-14}
Divide both sides by -14.
a=\frac{21}{2}
Reduce the fraction \frac{-147}{-14} to lowest terms by extracting and canceling out -7.
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