Solve for u
u=12
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-28=-3u+8
Combine 2u and -5u to get -3u.
-3u+8=-28
Swap sides so that all variable terms are on the left hand side.
-3u=-28-8
Subtract 8 from both sides.
-3u=-36
Subtract 8 from -28 to get -36.
u=\frac{-36}{-3}
Divide both sides by -3.
u=12
Divide -36 by -3 to get 12.
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