Answer:
No real values of m
[tex]{ \tt{ \frac{4}{7}m = \frac{2}{7} (2m + 1) }} \\ \\ { \tt{7 \times { \huge{ \{}} \frac{4}{7}m = \frac{2}{7} (2m + 1) \}}}{ \huge{ \}}} \\ \\ { \tt{4m = 2(2m + 1)}} \\ { \tt{4m = 4m + 1}} \\ { \tt{ \red{ \{m \dashrightarrow \: imaginary \: value \}}}}[/tex]
