21/x=15/36

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Solution for 21/x=15/36 equation: 


D( x )

x = 0

x = 0

x = 0

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

21/x = 15/36 // - 15/36

21/x-(15/36) = 0

21/x-5/12 = 0

21*x^-1 = 5/12 // : 21

x^-1 = 5/252

-1 < 0

1/(x^1) = 5/252 // * x^1

1 = 5/252*x^1 // : 5/252

252/5 = x^1

x = 252/5

x = 252/5

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