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-2=8(u-7)-2u
We move all terms to the left:
-2-(8(u-7)-2u)=0
We calculate terms in parentheses: -(8(u-7)-2u), so:We get rid of parentheses
8(u-7)-2u
We add all the numbers together, and all the variables
-2u+8(u-7)
We multiply parentheses
-2u+8u-56
We add all the numbers together, and all the variables
6u-56
Back to the equation:
-(6u-56)
-6u+56-2=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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