-2/x=7

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Solution for -2/x=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

-2/x = 7 // - 7

-2/x-7 = 0

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

x^-1 = -7/2

-1 < 0

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

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

-2/7 = x^1

x = -2/7

x = -2/7

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