-3/x+4=20

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Solution for -3/x+4=20 equation: 


D( x )

x = 0

x = 0

x = 0

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

4-3/x = 20 // - 20

4-3/x-20 = 0

-3*x^-1 = 16 // : -3

x^-1 = -16/3

-1 < 0

1/(x^1) = -16/3 // * x^1

1 = -16/3*x^1 // : -16/3

-3/16 = x^1

x = -3/16

x = -3/16

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