7/x=2/6

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Solution for 7/x=2/6 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x = 2/6 // - 2/6

7/x-(2/6) = 0

7/x-1/3 = 0

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

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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