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-11=7(u+7)+8u
We move all terms to the left:
-11-(7(u+7)+8u)=0
We calculate terms in parentheses: -(7(u+7)+8u), so:We get rid of parentheses
7(u+7)+8u
We add all the numbers together, and all the variables
8u+7(u+7)
We multiply parentheses
8u+7u+49
We add all the numbers together, and all the variables
15u+49
Back to the equation:
-(15u+49)
-15u-49-11=0
We add all the numbers together, and all the variables
-15u-60=0
We move all terms containing u to the left, all other terms to the right
-15u=60
u=60/-15
u=-4
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