X/-x-90=0

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Solution for X/-x-90=0 equation: 


D( x )

-x = 0

-x = 0

x = 0

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

X/(-x)-90 = 0

-X*x^-1 = 90 // : -X

x^-1 = -90*X^-1

-1 < 0

1/(x^1) = -90*X^-1 // * x^1

1 = -90*X^-1*x^1 // : -90*X^-1

1/(-90*X^-1) = x^1

x = 1/(-90*X^-1)

x = 1/(-90*X^-1)

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