(2x+4)/(x+1)=3

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Solution for (2x+4)/(x+1)=3 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+4)/(x+1) = 3 // - 3

(2*x+4)/(x+1)-3 = 0

(2*x+4)/(x+1)+(-3*(x+1))/(x+1) = 0

2*x-3*(x+1)+4 = 0

1-x = 0

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

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

1-x = 0

1-x = 0 // - 1

-x = -1 // * -1

x = 1

x = 1

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