-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

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