(1/x)+(2/(x+1))=0

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Solution for (1/x)+(2/(x+1))=0 equation: 


D( x )

x = 0

x+1 = 0

x = 0

x = 0

x+1 = 0

x+1 = 0

x+1 = 0 // - 1

x = -1

x in (-oo:-1) U (-1:0) U (0:+oo)

2/(x+1)+1/x = 0

(2*x)/(x*(x+1))+(1*(x+1))/(x*(x+1)) = 0

1*(x+1)+2*x = 0

3*x+1 = 0

(3*x+1)/(x*(x+1)) = 0

(3*x+1)/(x*(x+1)) = 0 // * x*(x+1)

3*x+1 = 0

3*x+1 = 0 // - 1

3*x = -1 // : 3

x = -1/3

x = -1/3

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