4-8/x=7

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Solution for 4-8/x=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

4-(8/x) = 7 // - 7

4-(8/x)-7 = 0

4-8*x^-1-7 = 0

-8*x^-1 = 3 // : -8

x^-1 = -3/8

-1 < 0

1/(x^1) = -3/8 // * x^1

1 = -3/8*x^1 // : -3/8

-8/3 = x^1

x = -8/3

x = -8/3

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