5/x-2/x=7

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Solution for 5/x-2/x=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

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

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

5/x-2*x^-1-7 = 0

3*x^-1 = 7 // : 3

x^-1 = 7/3

-1 < 0

1/(x^1) = 7/3 // * x^1

1 = 7/3*x^1 // : 7/3

3/7 = x^1

x = 3/7

x = 3/7

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