-3/10=7/x

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Solution for -3/10=7/x equation: 


D( x )

x = 0

x = 0

x = 0

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

-3/10 = 7/x // - 7/x

-(7/x)-3/10 = 0

-7*x^-1-3/10 = 0

-7*x^-1 = 3/10 // : -7

x^-1 = -3/70

-1 < 0

1/(x^1) = -3/70 // * x^1

1 = -3/70*x^1 // : -3/70

-70/3 = x^1

x = -70/3

x = -70/3

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