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-50=2(u+69)
We move all terms to the left:
-50-(2(u+69))=0
We calculate terms in parentheses: -(2(u+69)), so:We get rid of parentheses
2(u+69)
We multiply parentheses
2u+138
Back to the equation:
-(2u+138)
-2u-138-50=0
We add all the numbers together, and all the variables
-2u-188=0
We move all terms containing u to the left, all other terms to the right
-2u=188
u=188/-2
u=-94
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