3/7=861/x

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Solution for 3/7=861/x equation: 


D( x )

x = 0

x = 0

x = 0

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

3/7 = 861/x // - 861/x

3/7-(861/x) = 0

3/7-861*x^-1 = 0

-861*x^-1 = -3/7 // : -861

x^-1 = 1/2009

-1 < 0

1/(x^1) = 1/2009 // * x^1

1 = 1/2009*x^1 // : 1/2009

2009 = x^1

x = 2009

x = 2009

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