(2/8)=(-30/x)

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Solution for (2/8)=(-30/x) equation: 


D( x )

x = 0

x = 0

x = 0

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

2/8 = -30/x // + -30/x

2/8-(-30/x) = 0

30*x^-1+2/8 = 0

30*x^-1 = -1/4 // : 30

x^-1 = -1/120

-1 < 0

1/(x^1) = -1/120 // * x^1

1 = -1/120*x^1 // : -1/120

-120 = x^1

x = -120

x = -120

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