4/5=3/x

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Solution for 4/5=3/x equation: 


D( x )

x = 0

x = 0

x = 0

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

4/5 = 3/x // - 3/x

4/5-(3/x) = 0

4/5-3*x^-1 = 0

-3*x^-1 = -4/5 // : -3

x^-1 = 4/15

-1 < 0

1/(x^1) = 4/15 // * x^1

1 = 4/15*x^1 // : 4/15

15/4 = x^1

x = 15/4

x = 15/4

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