9/x=4/7

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Solution for 9/x=4/7 equation: 


D( x )

x = 0

x = 0

x = 0

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

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

9/x-(4/7) = 0

9/x-4/7 = 0

9*x^-1 = 4/7 // : 9

x^-1 = 4/63

-1 < 0

1/(x^1) = 4/63 // * x^1

1 = 4/63*x^1 // : 4/63

63/4 = x^1

x = 63/4

x = 63/4

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