(1/x)-(3/(x+2))

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Solution for (1/x)-(3/(x+2)) equation: 


D( x )

x+2 = 0

x = 0

x+2 = 0

x+2 = 0

x+2 = 0 // - 2

x = -2

x = 0

x = 0

x in (-oo:-2) U (-2:0) U (0:+oo)

1/x-(3/(x+2)) = 0

1/x-3*(x+2)^-1 = 0

1/x-3/(x+2) = 0

(-3*x)/(x*(x+2))+(1*(x+2))/(x*(x+2)) = 0

1*(x+2)-3*x = 0

2-2*x = 0

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

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

2-2*x = 0

2-2*x = 0 // - 2

-2*x = -2 // : -2

x = -2/(-2)

x = 1

x = 1

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