\( \frac{1}{2}-\frac{1}{12}= \)

Step 1 ：\( \text{lcm}(2, 12) = 12 \)

Step 2 ：\( \frac{1}{2} - \frac{1}{12} = \frac{6}{12} - \frac{1}{12} \)

Step 3 ：\( \frac{6}{12} - \frac{1}{12} = \frac{6-1}{12} = \frac{5}{12} \)