Solve for a
a=-\frac{1}{3}\approx -0.333333333
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15a-8-9a=-10
Subtract 9a from both sides.
6a-8=-10
Combine 15a and -9a to get 6a.
6a=-10+8
Add 8 to both sides.
6a=-2
Add -10 and 8 to get -2.
a=\frac{-2}{6}
Divide both sides by 6.
a=-\frac{1}{3}
Reduce the fraction \frac{-2}{6} to lowest terms by extracting and canceling out 2.
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