10/4=15/x

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Solution for 10/4=15/x equation: 


D( x )

x = 0

x = 0

x = 0

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

10/4 = 15/x // - 15/x

10/4-(15/x) = 0

10/4-15*x^-1 = 0

-15*x^-1 = -5/2 // : -15

x^-1 = 1/6

-1 < 0

1/(x^1) = 1/6 // * x^1

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

6 = x^1

x = 6

x = 6

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