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-50=u+(u-9)-2
We move all terms to the left:
-50-(u+(u-9)-2)=0
We calculate terms in parentheses: -(u+(u-9)-2), so:We get rid of parentheses
u+(u-9)-2
We get rid of parentheses
u+u-9-2
We add all the numbers together, and all the variables
2u-11
Back to the equation:
-(2u-11)
-2u+11-50=0
We add all the numbers together, and all the variables
-2u-39=0
We move all terms containing u to the left, all other terms to the right
-2u=39
u=39/-2
u=-19+1/2
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