9/x=15/35

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Solution for 9/x=15/35 equation: 


D( x )

x = 0

x = 0

x = 0

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

9/x = 15/35 // - 15/35

9/x-(15/35) = 0

9/x-3/7 = 0

9*x^-1 = 3/7 // : 9

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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