Solve for w
w\leq 6
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-4w\geq -39+15
Add 15 to both sides.
-4w\geq -24
Add -39 and 15 to get -24.
w\leq \frac{-24}{-4}
Divide both sides by -4. Since -4 is negative, the inequality direction is changed.
w\leq 6
Divide -24 by -4 to get 6.
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