21/x=7/2/3

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Solution for 21/x=7/2/3 equation: 


D( x )

x = 0

x = 0

x = 0

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

21/x = (7/2)/3 // - (7/2)/3

21/x-((7/2)/3) = 0

21/x-7/6 = 0

21*x^-1 = 7/6 // : 21

x^-1 = 1/18

-1 < 0

1/(x^1) = 1/18 // * x^1

1 = 1/18*x^1 // : 1/18

18 = x^1

x = 18

x = 18

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