3/4=9/x-7

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Solution for 3/4=9/x-7 equation: 


D( x )

x = 0

x = 0

x = 0

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

3/4 = 9/x-7 // - 9/x-7

3/4-(9/x)+7 = 0

3/4-9*x^-1+7 = 0

-9*x^-1 = -31/4 // : -9

x^-1 = 31/36

-1 < 0

1/(x^1) = 31/36 // * x^1

1 = 31/36*x^1 // : 31/36

36/31 = x^1

x = 36/31

x = 36/31

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