Answer:

- 3

Step-by-step explanation:

[tex] \frac{6}{3m + 1} = \frac{9}{3m - 3} \\ \\ 6(3m - 3) = 9(3m + 1) \\ \\ 18m - 18 = 27m + 9 \\ \\ 27m - 18m = - 18 - 9 \\ \\ 9m = - 27 \\ \\ m = \frac{ - 27}{9} \\ \\ m = - 3[/tex]

Answer:

m=4

1. divide the numbers

2. divide the numbers

3. subtract 1 from both sides