Solve for u
u<3
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13-12u+6u>-5
Add 9 and 4 to get 13.
13-6u>-5
Combine -12u and 6u to get -6u.
-6u>-5-13
Subtract 13 from both sides.
-6u>-18
Subtract 13 from -5 to get -18.
u<\frac{-18}{-6}
Divide both sides by -6. Since -6 is negative, the inequality direction is changed.
u<3
Divide -18 by -6 to get 3.
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Limits
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