7/x-4*8=15/x-4

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Solution for 7/x-4*8=15/x-4 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x-(4*8) = 15/x-4 // - 15/x-4

7/x-(15/x)-(4*8)+4 = 0

7/x-15*x^-1-32+4 = 0

-8*x^-1 = 28 // : -8

x^-1 = -7/2

-1 < 0

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

1 = -7/2*x^1 // : -7/2

-2/7 = x^1

x = -2/7

x = -2/7

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