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-4+u/5=31
We move all terms to the left:
-4+u/5-(31)=0
We add all the numbers together, and all the variables
u/5-35=0
We multiply all the terms by the denominator
u-35*5=0
We add all the numbers together, and all the variables
u-175=0
We move all terms containing u to the left, all other terms to the right
u=175
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