2=31/x+4

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Solution for 2=31/x+4 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

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

2-(31/x)-4 = 0

2-31*x^-1-4 = 0

-31*x^-1 = 2 // : -31

x^-1 = -2/31

-1 < 0

1/(x^1) = -2/31 // * x^1

1 = -2/31*x^1 // : -2/31

-31/2 = x^1

x = -31/2

x = -31/2

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