12/6=m/21

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Solution for 12/6=m/21 equation: 


m in (-oo:+oo)

12/6 = m/21 // - m/21

12/6-(m/21) = 0

2-1/21*m = 0 // - 2

-1/21*m = -2 // : -1/21

m = -2/(-1/21)

m = 42

m = 42

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