Solve for a
a=-\frac{1}{9}\approx -0.111111111
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69a-42a=-3
Subtract 42a from both sides.
27a=-3
Combine 69a and -42a to get 27a.
a=\frac{-3}{27}
Divide both sides by 27.
a=-\frac{1}{9}
Reduce the fraction \frac{-3}{27} to lowest terms by extracting and canceling out 3.
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