To solve the expression \( 3(-1)(-5) \), follow these steps:

1. Multiply \( -1 \times -5 \). Since multiplying two negative numbers results in a positive number:
   \[
   -1 \times -5 = 5
   \]
2. Now, multiply the result by 3:
   \[
   3 \times 5 = 15
   \]

Thus, \( 3(-1)(-5) = 15 \).

Would you like further details on this or have any other questions?

Here are 5 related questions:
1. What happens when you multiply two negative numbers?
2. How do you handle negative signs in more complex expressions?
3. What is the general rule for multiplying negative and positive numbers?
4. How would this change if one of the numbers was a fraction?
5. How can you simplify expressions involving multiple negative signs?

**Tip**: When multiplying two negative numbers, the result is always positive.

Learn how to solve the multiplication expression 3(-1)(-5) step by step. This problem focuses on the rule of signs and how multiplying two negative numbers results in a positive value. Suitable for students in Grades 5-7.

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