3/8-3/9

To subtract the fractions \( \frac{3}{8} - \frac{3}{9} \), we first need to find a common denominator. The least common multiple (LCM) of 8 and 9 is 72.

Now we convert each fraction to have a denominator of 72:

\[ \frac{3}{8} = \frac{3 \times 9}{8 \times 9} = \frac{27}{72} \]

\[ \frac{3}{9} = \frac{3 \times 8}{9 \times 8} = \frac{24}{72} \]

Now we can perform the subtraction:

\[ \frac{27}{72} - \frac{24}{72} = \frac{27 - 24}{72} = \frac{3}{72} \]

Now, we can simplify \( \frac{3}{72} \):

\[ \frac{3}{72} = \frac{1}{24} \]

So, \( \frac{3}{8} - \frac{3}{9} = \frac{1}{24} \).