2/7=m/21

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Solution for 2/7=m/21 equation: 


m in (-oo:+oo)

2/7 = m/21 // - m/21

2/7-(m/21) = 0

2/7-1/21*m = 0 // - 2/7

-1/21*m = -2/7 // : -1/21

m = -2/7/(-1/21)

m = 6

m = 6

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