36/12=63/x

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Solution for 36/12=63/x equation: 


D( x )

x = 0

x = 0

x = 0

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

36/12 = 63/x // - 63/x

36/12-(63/x) = 0

36/12-63*x^-1 = 0

-63*x^-1 = -3 // : -63

x^-1 = 1/21

-1 < 0

1/(x^1) = 1/21 // * x^1

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

21 = x^1

x = 21

x = 21

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