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8/u=7
We move all terms to the left:
8/u-(7)=0
Domain of the equation: u!=0We multiply all the terms by the denominator
u∈R
-7*u+8=0
We add all the numbers together, and all the variables
-7u+8=0
We move all terms containing u to the left, all other terms to the right
-7u=-8
u=-8/-7
u=1+1/7
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