Question

. In order to prove that the sum of two rational
numbers, a and b, is rational, put the following steps in
correct order.
Step 1. Identify the sum as rational.
Step 2. Find the common denominator.
Step 3. Write a and b as fractions.
Step 4. Add the fractions.

Answer 1

To prove that the sum of two rational numbers \( a \) and \( b \) is rational, you can put the steps in the following order:

1. **Step 3:** Write \( a \) and \( b \) as fractions.
2. **Step 2:** Find the common denominator.
3. **Step 4:** Add the fractions.
4. **Step 1:** Identify the sum as rational.

So the correct order is: 3, 2, 4, 1.