3/7=4/x+5

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Solution for 3/7=4/x+5 equation: 


D( x )

x = 0

x = 0

x = 0

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

3/7 = 4/x+5 // - 4/x+5

3/7-(4/x)-5 = 0

3/7-4*x^-1-5 = 0

-4*x^-1 = 32/7 // : -4

x^-1 = -8/7

-1 < 0

1/(x^1) = -8/7 // * x^1

1 = -8/7*x^1 // : -8/7

-7/8 = x^1

x = -7/8

x = -7/8

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