31/(x+4)=2

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Solution for 31/(x+4)=2 equation: 


D( x )

x+4 = 0

x+4 = 0

x+4 = 0

x+4 = 0 // - 4

x = -4

x in (-oo:-4) U (-4:+oo)

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

31/(x+4)-2 = 0

31/(x+4)+(-2*(x+4))/(x+4) = 0

31-2*(x+4) = 0

23-2*x = 0

(23-2*x)/(x+4) = 0

(23-2*x)/(x+4) = 0 // * x+4

23-2*x = 0

23-2*x = 0 // - 23

-2*x = -23 // : -2

x = -23/(-2)

x = 23/2

x = 23/2

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