Respuesta :

[tex]\sf m - 3m = 14 - 4m \\ \\ -2m = 14 - 4m \\ \\ Add \ +4m \ to \ both \ sides \\ \\ -2m + 4m = 14 - 4m + 4m \\ \\ 2m = 14 \\ \\ Divide \ both \ sides \ by \ 2. \\ \\ \dfrac{2m}{2} = \dfrac{14}{2} \\ \\ m = 7[/tex]

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