221/x=7

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Solution for 221/x=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

221/x = 7 // - 7

221/x-7 = 0

221*x^-1 = 7 // : 221

x^-1 = 7/221

-1 < 0

1/(x^1) = 7/221 // * x^1

1 = 7/221*x^1 // : 7/221

221/7 = x^1

x = 221/7

x = 221/7

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