12/21=a/14

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Solution for 12/21=a/14 equation: 


a in (-oo:+oo)

12/21 = a/14 // - a/14

12/21-(a/14) = 0

4/7-1/14*a = 0 // - 4/7

-1/14*a = -4/7 // : -1/14

a = -4/7/(-1/14)

a = 8

a = 8

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