3/x=20/7

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Solution for 3/x=20/7 equation: 


D( x )

x = 0

x = 0

x = 0

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

3/x = 20/7 // - 20/7

3/x-(20/7) = 0

3/x-20/7 = 0

3*x^-1 = 20/7 // : 3

x^-1 = 20/21

-1 < 0

1/(x^1) = 20/21 // * x^1

1 = 20/21*x^1 // : 20/21

21/20 = x^1

x = 21/20

x = 21/20

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