Verified Answer :

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\(3m \geq 9\,\,(Divided\,\,for\,\,3)\\ \\ \frac{3m}{3} \geq \frac{9}{3}\\ \\ \boxed{m \geq 3}\,\, \,\,or\,\,\,\,\boxed{m \in\to[3, +\infty)}\)