The expression is:

\[
\frac{4}{7} - \frac{3}{8}
\]

To subtract these fractions, we need to find a common denominator. The least common denominator (LCD) of 7 and 8 is 56.

Now, let's rewrite both fractions with the denominator of 56:

\[
\frac{4}{7} = \frac{4 \times 8}{7 \times 8} = \frac{32}{56}
\]
\[
\frac{3}{8} = \frac{3 \times 7}{8 \times 7} = \frac{21}{56}
\]

Now, subtract the fractions:

\[
\frac{32}{56} - \frac{21}{56} = \frac{32 - 21}{56} = \frac{11}{56}
\]

So, the result of \( \frac{4}{7} - \frac{3}{8} \) is:

\[
\frac{11}{56}
\]

Would you like more details on any of these steps?

Here are some related questions:
1. How do you find the least common denominator (LCD) of two fractions?
2. How do you convert fractions to have the same denominator?
3. What are some common mistakes when subtracting fractions?
4. How can you check if the subtraction result is correct?
5. How do you simplify fractions after subtraction?

**Tip:** Always simplify your fractions, if possible, after performing addition or subtraction.

Learn how to subtract the fractions 4/7 and 3/8 by finding the least common denominator (LCD) of 56. Step-by-step explanation suitable for students in Grades 5-7, including the process of rewriting fractions with the same denominator and subtracting them.

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