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

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


D( x )

x+1 = 0

x+1 = 0

x+1 = 0

x+1 = 0 // - 1

x = -1

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

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

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

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

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

1-2*x = 0

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

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

1-2*x = 0

1-2*x = 0 // - 1

-2*x = -1 // : -2

x = -1/(-2)

x = 1/2

x = 1/2

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