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76=2(u+23)
We move all terms to the left:
76-(2(u+23))=0
We calculate terms in parentheses: -(2(u+23)), so:We get rid of parentheses
2(u+23)
We multiply parentheses
2u+46
Back to the equation:
-(2u+46)
-2u-46+76=0
We add all the numbers together, and all the variables
-2u+30=0
We move all terms containing u to the left, all other terms to the right
-2u=-30
u=-30/-2
u=+15
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