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34=2u+4(u-5)
We move all terms to the left:
34-(2u+4(u-5))=0
We calculate terms in parentheses: -(2u+4(u-5)), so:We get rid of parentheses
2u+4(u-5)
We multiply parentheses
2u+4u-20
We add all the numbers together, and all the variables
6u-20
Back to the equation:
-(6u-20)
-6u+20+34=0
We add all the numbers together, and all the variables
-6u+54=0
We move all terms containing u to the left, all other terms to the right
-6u=-54
u=-54/-6
u=+9
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