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3+u/5=8
We move all terms to the left:
3+u/5-(8)=0
We add all the numbers together, and all the variables
u/5-5=0
We multiply all the terms by the denominator
u-5*5=0
We add all the numbers together, and all the variables
u-25=0
We move all terms containing u to the left, all other terms to the right
u=25
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