3/x-4=12/28

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Solution for 3/x-4=12/28 equation: 


D( x )

x = 0

x = 0

x = 0

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

3/x-4 = 12/28 // - 12/28

3/x-(12/28)-4 = 0

3/x-3/7-4 = 0

3*x^-1 = 31/7 // : 3

x^-1 = 31/21

-1 < 0

1/(x^1) = 31/21 // * x^1

1 = 31/21*x^1 // : 31/21

21/31 = x^1

x = 21/31

x = 21/31

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