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8(u+4)=4(u+1)
We move all terms to the left:
8(u+4)-(4(u+1))=0
We multiply parentheses
8u-(4(u+1))+32=0
We calculate terms in parentheses: -(4(u+1)), so:We get rid of parentheses
4(u+1)
We multiply parentheses
4u+4
Back to the equation:
-(4u+4)
8u-4u-4+32=0
We add all the numbers together, and all the variables
4u+28=0
We move all terms containing u to the left, all other terms to the right
4u=-28
u=-28/4
u=-7
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