7=-1/x-3

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Solution for 7=-1/x-3 equation: 


D( x )

x = 0

x = 0

x = 0

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

7 = -1/x-3 // + -1/x-3

3-(-1/x)+7 = 0

x^-1+3+7 = 0

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

x^-1 = -10

-1 < 0

1/(x^1) = -10 // * x^1

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

-1/10 = x^1

x = -1/10

x = -1/10

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