3/x+7

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Solution for 3/x+7 equation: 


D( x )

x = 0

x = 0

x = 0

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

3/x+7 = 0

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

x^-1 = -7/3

-1 < 0

1/(x^1) = -7/3 // * x^1

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

-3/7 = x^1

x = -3/7

x = -3/7

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