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5/x-1+2/x+1=2/x2-1
We move all terms to the left:
5/x-1+2/x+1-(2/x2-1)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: x2-1)!=0We add all the numbers together, and all the variables
x∈R
5/x+2/x-(2/x2-1)=0
We get rid of parentheses
5/x+2/x-2/x2+1=0
We calculate fractions
We do not support expression: x^3
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