12/x=4/7

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Solution for 12/x=4/7 equation: 


D( x )

x = 0

x = 0

x = 0

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

12/x = 4/7 // - 4/7

12/x-(4/7) = 0

12/x-4/7 = 0

12*x^-1 = 4/7 // : 12

x^-1 = 1/21

-1 < 0

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

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

21 = x^1

x = 21

x = 21

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