2=7/x

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Solution for 2=7/x equation: 


D( x )

x = 0

x = 0

x = 0

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

2 = 7/x // - 7/x

2-(7/x) = 0

2-7*x^-1 = 0

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

x^-1 = 2/7

-1 < 0

1/(x^1) = 2/7 // * x^1

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

7/2 = x^1

x = 7/2

x = 7/2

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