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The question is asking to subtract two fractions: \( \frac{5}{6} - \frac{7}{10} \).

To solve this, we follow these steps:

### Step 1: Find the Least Common Denominator (LCD)
The denominators are 6 and 10. The least common denominator (LCD) of 6 and 10 is 30.

### Step 2: Convert Fractions to Equivalent Fractions with LCD
We need to convert both fractions to have a denominator of 30.

- \( \frac{5}{6} \) becomes \( \frac{5 \times 5}{6 \times 5} = \frac{25}{30} \).
- \( \frac{7}{10} \) becomes \( \frac{7 \times 3}{10 \times 3} = \frac{21}{30} \).

### Step 3: Subtract the Numerators
Now subtract the numerators while keeping the denominator the same:

\[
\frac{25}{30} - \frac{21}{30} = \frac{25 - 21}{30} = \frac{4}{30}.
\]

### Step 4: Simplify the Fraction
Simplify \( \frac{4}{30} \) by dividing both the numerator and denominator by their greatest common divisor, which is 2:

\[
\frac{4}{30} = \frac{2}{15}.
\]

Thus, the answer is \( \frac{2}{15} \), but none of the provided options match this exact result.

Would you like further clarification on any step? Here are 5 related questions to deepen your understanding:

1. How do you find the least common denominator for two fractions?
2. What is the process for converting fractions to have a common denominator?
3. How do you simplify a fraction to its lowest terms?
4. Why do we subtract only the numerators when subtracting fractions with the same denominator?
5. Can you explain how to determine if a fraction can be simplified?

**Tip:** Always check if your final fraction can be simplified to its lowest terms for the most accurate answer!

Learn how to subtract fractions by finding the least common denominator with this example: 5/6 - 7/10. Suitable for students in Grades 6-8, this problem explains step-by-step how to convert fractions, subtract, and simplify.

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