The inequality is
[tex]\frac{-3}{7}m<21[/tex]
we need to isolate the m in order to solve the inequality
[tex]\begin{gathered} -3m<21(7) \\ -3m<147 \end{gathered}[/tex][tex]\begin{gathered} m>\frac{147}{-3} \\ m>-49 \end{gathered}[/tex]
the answer is m>-49
