Solve for r
r\geq -5
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-3r+r\leq 10
Add r to both sides.
-2r\leq 10
Combine -3r and r to get -2r.
r\geq \frac{10}{-2}
Divide both sides by -2. Since -2 is negative, the inequality direction is changed.
r\geq -5
Divide 10 by -2 to get -5.
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