Solve for a
a = \frac{17}{2} = 8\frac{1}{2} = 8.5
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-4a=8-42
Subtract 42 from both sides.
-4a=-34
Subtract 42 from 8 to get -34.
a=\frac{-34}{-4}
Divide both sides by -4.
a=\frac{17}{2}
Reduce the fraction \frac{-34}{-4} to lowest terms by extracting and canceling out -2.
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