7=-3/x+1

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


D( x )

x = 0

x = 0

x = 0

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

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

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

3*x^-1-1+7 = 0

3*x^-1 = -6 // : 3

x^-1 = -2

-1 < 0

1/(x^1) = -2 // * x^1

1 = -2*x^1 // : -2

-1/2 = x^1

x = -1/2

x = -1/2

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