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-8u-18=3(u+5)
We move all terms to the left:
-8u-18-(3(u+5))=0
We calculate terms in parentheses: -(3(u+5)), so:We get rid of parentheses
3(u+5)
We multiply parentheses
3u+15
Back to the equation:
-(3u+15)
-8u-3u-15-18=0
We add all the numbers together, and all the variables
-11u-33=0
We move all terms containing u to the left, all other terms to the right
-11u=33
u=33/-11
u=-3
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