63/x=21

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Solution for 63/x=21 equation: 


D( x )

x = 0

x = 0

x = 0

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

63/x = 21 // - 21

63/x-21 = 0

63*x^-1 = 21 // : 63

x^-1 = 1/3

-1 < 0

1/(x^1) = 1/3 // * x^1

1 = 1/3*x^1 // : 1/3

3 = x^1

x = 3

x = 3

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