To subtract \( \frac{1}{4} \) from \( \frac{3}{8} \), we first need a common denominator. The denominators are 8 and 4.
The least common multiple of 8 and 4 is 8. Therefore, we can convert \( \frac{1}{4} \) to have a denominator of 8:
\[ \frac{1}{4} = \frac{1 \times 2}{4 \times 2} = \frac{2}{8} \]
Now we can perform the subtraction:
\[ \frac{3}{8} - \frac{2}{8} = \frac{3 - 2}{8} = \frac{1}{8} \]
Thus, the answer is \( \frac{1}{8} \).
The numerator is \( 1 \).
So, the final answer for the numerator is:
1