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6=-2/u
We move all terms to the left:
6-(-2/u)=0
Domain of the equation: u)!=0We get rid of parentheses
u!=0/1
u!=0
u∈R
2/u+6=0
We multiply all the terms by the denominator
6*u+2=0
We add all the numbers together, and all the variables
6u+2=0
We move all terms containing u to the left, all other terms to the right
6u=-2
u=-2/6
u=-1/3
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