-3=m/-7

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Solution for -3=m/-7 equation: 


m in (-oo:+oo)

-3 = m/(-7) // - m/(-7)

-(m/(-7))-3 = 0

1/7*m-3 = 0 // + 3

1/7*m = 3 // : 1/7

m = 3/1/7

m = 21

m = 21

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