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7u/6=-42
We move all terms to the left:
7u/6-(-42)=0
We add all the numbers together, and all the variables
7u/6+42=0
We multiply all the terms by the denominator
7u+42*6=0
We add all the numbers together, and all the variables
7u+252=0
We move all terms containing u to the left, all other terms to the right
7u=-252
u=-252/7
u=-36
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