5/x=20/28

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Solution for 5/x=20/28 equation: 


D( x )

x = 0

x = 0

x = 0

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

5/x = 20/28 // - 20/28

5/x-(20/28) = 0

5/x-5/7 = 0

5*x^-1 = 5/7 // : 5

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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