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-45=-u/8
We move all terms to the left:
-45-(-u/8)=0
We get rid of parentheses
u/8-45=0
We multiply all the terms by the denominator
u-45*8=0
We add all the numbers together, and all the variables
u-360=0
We move all terms containing u to the left, all other terms to the right
u=360
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