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You uploaded an image of a fraction subtraction problem:

\[
\frac{5}{7} - \frac{3}{8}
\]

Let’s solve this step by step.

### Step 1: Find the common denominator
The least common denominator (LCD) of 7 and 8 is 56. 

### Step 2: Convert fractions to have the same denominator
\[
\frac{5}{7} = \frac{5 \times 8}{7 \times 8} = \frac{40}{56}
\]
\[
\frac{3}{8} = \frac{3 \times 7}{8 \times 7} = \frac{21}{56}
\]

### Step 3: Subtract the numerators
\[
\frac{40}{56} - \frac{21}{56} = \frac{40 - 21}{56} = \frac{19}{56}
\]

### Step 4: Simplify the result
\(\frac{19}{56}\) is already in its simplest form.

So, the final answer is:
\[
\frac{19}{56}
\]

Would you like more details or have any questions?

Here are 5 related questions to explore:
1. How do you find the least common denominator for two fractions?
2. How can you check if a fraction is in its simplest form?
3. What is the difference between subtracting fractions and adding fractions?
4. How can we solve fraction problems with more complex numerators?
5. Why is finding a common denominator necessary when subtracting fractions?

**Tip:** Always simplify your final answer in fraction problems to avoid unnecessary complexity.

Learn how to subtract fractions 5/7 - 3/8 using the Least Common Denominator method. This step-by-step solution is suitable for students in Grades 6-8, covering key concepts like LCD and fraction simplification.

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