30/6=45/x

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Solution for 30/6=45/x equation: 


D( x )

x = 0

x = 0

x = 0

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

30/6 = 45/x // - 45/x

30/6-(45/x) = 0

30/6-45*x^-1 = 0

-45*x^-1 = -5 // : -45

x^-1 = 1/9

-1 < 0

1/(x^1) = 1/9 // * x^1

1 = 1/9*x^1 // : 1/9

9 = x^1

x = 9

x = 9

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