21/100=126/x

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Solution for 21/100=126/x equation: 


D( x )

x = 0

x = 0

x = 0

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

21/100 = 126/x // - 126/x

21/100-(126/x) = 0

21/100-126*x^-1 = 0

-126*x^-1 = -21/100 // : -126

x^-1 = 1/600

-1 < 0

1/(x^1) = 1/600 // * x^1

1 = 1/600*x^1 // : 1/600

600 = x^1

x = 600

x = 600

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