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6/u+7=4/u+7+2
We move all terms to the left:
6/u+7-(4/u+7+2)=0
Domain of the equation: u!=0
u∈R
Domain of the equation: u+7+2)!=0We add all the numbers together, and all the variables
We move all terms containing u to the left, all other terms to the right
u+2)!=-7
u∈R
6/u-(4/u+9)+7=0
We get rid of parentheses
6/u-4/u-9+7=0
We multiply all the terms by the denominator
-9*u+7*u+6-4=0
We add all the numbers together, and all the variables
-2u+2=0
We move all terms containing u to the left, all other terms to the right
-2u=-2
u=-2/-2
u=1
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