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4u+2(u+2)=34
We move all terms to the left:
4u+2(u+2)-(34)=0
We multiply parentheses
4u+2u+4-34=0
We add all the numbers together, and all the variables
6u-30=0
We move all terms containing u to the left, all other terms to the right
6u=30
u=30/6
u=5
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