17. \( \frac{6}{15}-\frac{1}{15}= \)

To solve \( \frac{6}{15}-\frac{1}{15} \), you simply subtract the numerators since the denominators are the same. So, \( 6 - 1 = 5 \). This gives you \( \frac{5}{15} \). Now, you can simplify that fraction. Both the numerator and the denominator can be divided by 5, resulting in \( \frac{1}{3} \). So, \( \frac{6}{15}-\frac{1}{15} = \frac{1}{3} \). Keep practicing those fraction operations; they can really come in handy!