3/5=8/x-4

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Solution for 3/5=8/x-4 equation: 


D( x )

x = 0

x = 0

x = 0

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

3/5 = 8/x-4 // - 8/x-4

3/5-(8/x)+4 = 0

3/5-8*x^-1+4 = 0

-8*x^-1 = -23/5 // : -8

x^-1 = 23/40

-1 < 0

1/(x^1) = 23/40 // * x^1

1 = 23/40*x^1 // : 23/40

40/23 = x^1

x = 40/23

x = 40/23

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