n/21=12/18

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Solution for n/21=12/18 equation: 


n in (-oo:+oo)

n/21 = 12/18 // - 12/18

n/21-(12/18) = 0

n/21-2/3 = 0

1/21*n-2/3 = 0 // + 2/3

1/21*n = 2/3 // : 1/21

n = 2/3/1/21

n = 14

n = 14

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