-2/5=18/x

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Solution for -2/5=18/x equation: 


D( x )

x = 0

x = 0

x = 0

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

-2/5 = 18/x // - 18/x

-(18/x)-2/5 = 0

-18*x^-1-2/5 = 0

-18*x^-1 = 2/5 // : -18

x^-1 = -1/45

-1 < 0

1/(x^1) = -1/45 // * x^1

1 = -1/45*x^1 // : -1/45

-45 = x^1

x = -45

x = -45

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