2/7=5/x

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Solution for 2/7=5/x equation: 


D( x )

x = 0

x = 0

x = 0

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

2/7 = 5/x // - 5/x

2/7-(5/x) = 0

2/7-5*x^-1 = 0

-5*x^-1 = -2/7 // : -5

x^-1 = 2/35

-1 < 0

1/(x^1) = 2/35 // * x^1

1 = 2/35*x^1 // : 2/35

35/2 = x^1

x = 35/2

x = 35/2

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