Let's simplify the expression:

\[
\frac{-7}{18} \times \frac{15}{28}
\]

### Step 1: Multiply the numerators
\[
-7 \times 15 = -105
\]

### Step 2: Multiply the denominators
\[
18 \times 28 = 504
\]

### Step 3: The expression becomes:
\[
\frac{-105}{504}
\]

### Step 4: Simplify the fraction
To simplify, find the greatest common divisor (GCD) of 105 and 504. The GCD is **21**.

\[
\frac{-105 \div 21}{504 \div 21} = \frac{-5}{24}
\]

So, the simplified result is:

\[
\frac{-5}{24}
\]

Would you like a detailed explanation of any of these steps?

Here are 5 questions you might be interested in next:
1. How do you find the GCD of two numbers?
2. Can you multiply fractions with different signs?
3. How do you simplify complex fractions?
4. What are the properties of negative numbers in fractions?
5. How do you convert a fraction to a decimal?

**Tip:** When multiplying fractions, always simplify first if possible, to make calculations easier!

Learn how to multiply and simplify the fractions -7/18 and 15/28. This step-by-step guide covers fraction multiplication, finding the greatest common divisor (GCD), and simplifying to get the final result of -5/24. Perfect for students in Grades 5-7.

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