-9=72/x

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Solution for -9=72/x equation: 


D( x )

x = 0

x = 0

x = 0

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

-9 = 72/x // - 72/x

-(72/x)-9 = 0

-72*x^-1-9 = 0

-72*x^-1 = 9 // : -72

x^-1 = -1/8

-1 < 0

1/(x^1) = -1/8 // * x^1

1 = -1/8*x^1 // : -1/8

-8 = x^1

x = -8

x = -8

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