(4x/x-1)-(7/x+2)

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Solution for (4x/x-1)-(7/x+2) equation: 


D( x )

x = 0

x = 0

x = 0

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

(4*x)/x-(7/x)-2-1 = 0

(4*x)/x-7*x^-1-2-1 = 0

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

x^-1 = 1/7

-1 < 0

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

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

7 = x^1

x = 7

x = 7

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