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-8=2u+4(u-8)
We move all terms to the left:
-8-(2u+4(u-8))=0
We calculate terms in parentheses: -(2u+4(u-8)), so:We get rid of parentheses
2u+4(u-8)
We multiply parentheses
2u+4u-32
We add all the numbers together, and all the variables
6u-32
Back to the equation:
-(6u-32)
-6u+32-8=0
We add all the numbers together, and all the variables
-6u+24=0
We move all terms containing u to the left, all other terms to the right
-6u=-24
u=-24/-6
u=+4
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