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-8=u/3+1
We move all terms to the left:
-8-(u/3+1)=0
We get rid of parentheses
-u/3-1-8=0
We multiply all the terms by the denominator
-u-1*3-8*3=0
We add all the numbers together, and all the variables
-1u-27=0
We move all terms containing u to the left, all other terms to the right
-u=27
u=27/-1
u=-27
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