Solve for u
u\leq -6
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-5u\geq 15+15
Add 15 to both sides.
-5u\geq 30
Add 15 and 15 to get 30.
u\leq \frac{30}{-5}
Divide both sides by -5. Since -5 is negative, the inequality direction is changed.
u\leq -6
Divide 30 by -5 to get -6.
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Limits
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