40/x-8/7=20/x-3

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Solution for 40/x-8/7=20/x-3 equation: 


D( x )

x = 0

x = 0

x = 0

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

40/x-(8/7) = 20/x-3 // - 20/x-3

40/x-(20/x)-(8/7)+3 = 0

40/x-20*x^-1-8/7+3 = 0

20*x^-1 = -13/7 // : 20

x^-1 = -13/140

-1 < 0

1/(x^1) = -13/140 // * x^1

1 = -13/140*x^1 // : -13/140

-140/13 = x^1

x = -140/13

x = -140/13

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