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50=-u/5
We move all terms to the left:
50-(-u/5)=0
We get rid of parentheses
u/5+50=0
We multiply all the terms by the denominator
u+50*5=0
We add all the numbers together, and all the variables
u+250=0
We move all terms containing u to the left, all other terms to the right
u=-250
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