(7/x)-4=-(4x/x-1)

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


D( x )

x = 0

x = 0

x = 0

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

7/x-4 = -((4*x)/x-1) // + (4*x)/x-1

7/x+(4*x)/x-4-1 = 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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