-7/x=28

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Solution for -7/x=28 equation: 


D( x )

x = 0

x = 0

x = 0

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

-7/x = 28 // - 28

-7/x-28 = 0

-7*x^-1 = 28 // : -7

x^-1 = -4

-1 < 0

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

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

-1/4 = x^1

x = -1/4

x = -1/4

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