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-5u+7(u-2)=-34
We move all terms to the left:
-5u+7(u-2)-(-34)=0
We add all the numbers together, and all the variables
-5u+7(u-2)+34=0
We multiply parentheses
-5u+7u-14+34=0
We add all the numbers together, and all the variables
2u+20=0
We move all terms containing u to the left, all other terms to the right
2u=-20
u=-20/2
u=-10
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