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38=3u+4(u-8)
We move all terms to the left:
38-(3u+4(u-8))=0
We calculate terms in parentheses: -(3u+4(u-8)), so:We get rid of parentheses
3u+4(u-8)
We multiply parentheses
3u+4u-32
We add all the numbers together, and all the variables
7u-32
Back to the equation:
-(7u-32)
-7u+32+38=0
We add all the numbers together, and all the variables
-7u+70=0
We move all terms containing u to the left, all other terms to the right
-7u=-70
u=-70/-7
u=+10
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