Logarithm Equation 4Ec31E
1. **State the problem:** Solve for $m$ in the equation $m - n \log_3 2 = 10 \log_9 6$.
2. **Recall logarithm properties:**
- Change of base formula: $\log_a b = \frac{\log_c b}{\log_c a}$ for any positive $c \neq 1$.
- Relationship between logs with different bases: $\log_9 6$ can be expressed in terms of base 3 since $9 = 3^2$.
3. **Rewrite $\log_9 6$ in terms of base 3:**
$$\log_9 6 = \frac{\log_3 6}{\log_3 9} = \frac{\log_3 6}{2}$$
4. **Substitute back into the equation:**
$$m - n \log_3 2 = 10 \times \frac{\log_3 6}{2} = 5 \log_3 6$$
5. **Express $\log_3 6$ as $\log_3 (2 \times 3)$:**
$$\log_3 6 = \log_3 2 + \log_3 3 = \log_3 2 + 1$$
6. **Substitute this into the equation:**
$$m - n \log_3 2 = 5 (\log_3 2 + 1) = 5 \log_3 2 + 5$$
7. **Isolate $m$:**
$$m = n \log_3 2 + 5 \log_3 2 + 5 = (n + 5) \log_3 2 + 5$$
**Final answer:**
$$m = (n + 5) \log_3 2 + 5$$