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-8u+12=5(u-8)
We move all terms to the left:
-8u+12-(5(u-8))=0
We calculate terms in parentheses: -(5(u-8)), so:We get rid of parentheses
5(u-8)
We multiply parentheses
5u-40
Back to the equation:
-(5u-40)
-8u-5u+40+12=0
We add all the numbers together, and all the variables
-13u+52=0
We move all terms containing u to the left, all other terms to the right
-13u=-52
u=-52/-13
u=+4
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