7/2=(3/x)-4

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Solution for 7/2=(3/x)-4 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/2 = 3/x-4 // - 3/x-4

7/2-(3/x)+4 = 0

7/2-3*x^-1+4 = 0

-3*x^-1 = -15/2 // : -3

x^-1 = 5/2

-1 < 0

1/(x^1) = 5/2 // * x^1

1 = 5/2*x^1 // : 5/2

2/5 = x^1

x = 2/5

x = 2/5

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