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(2/(z+1))+(2/(z-1))=5/z+1
We move all terms to the left:
(2/(z+1))+(2/(z-1))-(5/z+1)=0
Domain of the equation: (z+1))!=0
z∈R
Domain of the equation: (z-1))!=0
z∈R
Domain of the equation: z+1)!=0We get rid of parentheses
z∈R
(2/(z+1))+(2/(z-1))-5/z-1=0
We calculate fractions
((2*(z-1))*z)/((z+1))*(z-1))*z)+((2*(z+1))*z)/((z+1))*(z-1))*z)+(-5*(z+1))*z/((z+1))*(z-1))*z)-1=0
We can not solve this equation
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