Logarithm Solve Ebc22A
1. **State the problem:** Solve the equation $$\log_{12}(k - 10) + 5 = 4$$ for $k$.
2. **Isolate the logarithmic term:** Subtract 5 from both sides:
$$\log_{12}(k - 10) = 4 - 5 = -1$$
3. **Rewrite the logarithmic equation in exponential form:** Recall that if $$\log_a b = c$$ then $$b = a^c$$.
So,
$$k - 10 = 12^{-1}$$
4. **Evaluate the exponential:**
$$12^{-1} = \frac{1}{12}$$
5. **Solve for $k$:**
$$k = 10 + \frac{1}{12} = \frac{120}{12} + \frac{1}{12} = \frac{121}{12}$$
6. **Final answer:**
$$k = \frac{121}{12}$$