18/x=21/7

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Solution for 18/x=21/7 equation: 


D( x )

x = 0

x = 0

x = 0

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

18/x = 21/7 // - 21/7

18/x-(21/7) = 0

18/x-3 = 0

18*x^-1 = 3 // : 18

x^-1 = 1/6

-1 < 0

1/(x^1) = 1/6 // * x^1

1 = 1/6*x^1 // : 1/6

6 = x^1

x = 6

x = 6

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