15/330=20/x

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Solution for 15/330=20/x equation: 


D( x )

x = 0

x = 0

x = 0

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

15/330 = 20/x // - 20/x

15/330-(20/x) = 0

15/330-20*x^-1 = 0

-20*x^-1 = -1/22 // : -20

x^-1 = 1/440

-1 < 0

1/(x^1) = 1/440 // * x^1

1 = 1/440*x^1 // : 1/440

440 = x^1

x = 440

x = 440

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