((x-4)+1)/(x+1)=1/2

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Solution for ((x-4)+1)/(x+1)=1/2 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)

(x-4+1)/(x+1) = 1/2 // - 1/2

(x-4+1)/(x+1)-(1/2) = 0

(x-4+1)/(x+1)-1/2 = 0

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

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

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

x-7 = 0

(x-7)/(2*(x+1)) = 0

(x-7)/(2*(x+1)) = 0 // * 2*(x+1)

x-7 = 0

x-7 = 0 // + 7

x = 7

x = 7

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