4=(7/5)-(2/x)

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Solution for 4=(7/5)-(2/x) equation: 


D( x )

x = 0

x = 0

x = 0

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

4 = 7/5-(2/x) // - 7/5-(2/x)

2/x-(7/5)+4 = 0

2/x-7/5+4 = 0

2*x^-1 = -13/5 // : 2

x^-1 = -13/10

-1 < 0

1/(x^1) = -13/10 // * x^1

1 = -13/10*x^1 // : -13/10

-10/13 = x^1

x = -10/13

x = -10/13

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