0.7/x=21

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Solution for 0.7/x=21 equation: 


D( x )

x = 0

x = 0

x = 0

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

0.7/x = 21 // - 21

0.7/x-21 = 0

0.7*x^-1 = 21 // : 0.7

x^-1 = 30

-1 < 0

1/(x^1) = 30 // * x^1

1 = 30*x^1 // : 30

1/30 = x^1

x = 1/30

x = 1/30

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