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

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


D( x )

x+2 = 0

x+2 = 0

x+2 = 0

x+2 = 0 // - 2

x = -2

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

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

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

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

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

2*x-1 = 0

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

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

2*x-1 = 0

2*x-1 = 0 // + 1

2*x = 1 // : 2

x = 1/2

x = 1/2

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