Solve for r
r=-\frac{4}{5}=-0.8
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-3r-6-7r=2
Subtract 7r from both sides.
-10r-6=2
Combine -3r and -7r to get -10r.
-10r=2+6
Add 6 to both sides.
-10r=8
Add 2 and 6 to get 8.
r=\frac{8}{-10}
Divide both sides by -10.
r=-\frac{4}{5}
Reduce the fraction \frac{8}{-10} to lowest terms by extracting and canceling out 2.
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