30/15=6/x

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Solution for 30/15=6/x equation: 


D( x )

x = 0

x = 0

x = 0

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

30/15 = 6/x // - 6/x

30/15-(6/x) = 0

30/15-6*x^-1 = 0

-6*x^-1 = -2 // : -6

x^-1 = 1/3

-1 < 0

1/(x^1) = 1/3 // * x^1

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

3 = x^1

x = 3

x = 3

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