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-52=-u/2
We move all terms to the left:
-52-(-u/2)=0
We get rid of parentheses
u/2-52=0
We multiply all the terms by the denominator
u-52*2=0
We add all the numbers together, and all the variables
u-104=0
We move all terms containing u to the left, all other terms to the right
u=104
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