28/268=21/x

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Solution for 28/268=21/x equation: 


D( x )

x = 0

x = 0

x = 0

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

28/268 = 21/x // - 21/x

28/268-(21/x) = 0

28/268-21*x^-1 = 0

-21*x^-1 = -7/67 // : -21

x^-1 = 1/201

-1 < 0

1/(x^1) = 1/201 // * x^1

1 = 1/201*x^1 // : 1/201

201 = x^1

x = 201

x = 201

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