Add the following :
a. -236 and 573

Answer

To solve the problem of adding -236 and 573, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Numbers**: We have two numbers to add: -236 and 573.

2. **Rewrite the Addition**: We can rewrite the addition as:
\[ -236 + 573 \]

3. **Determine the Signs**: Since we are adding a negative number (-236) and a positive number (573), we will subtract the absolute values of the two numbers.

4. **Subtract the Absolute Values**:
\[ 573 - 236 \]

5. **Perform the Subtraction**:
- Start with the units place: \(3 - 6\) cannot be done, so we borrow 1 from the 7 (making it 6) and add 10 to 3 (making it 13).
\[ 13 - 6 = 7 \]
- Next, in the tens place, we have \(6 - 3 = 3\).
- Finally, in the hundreds place, we have \(5 - 2 = 3\).
- Thus, the result of the subtraction is:
\[ 573 - 236 = 337 \]

6. **Determine the Sign of the Result**: Since 573 (the positive number) is larger than 236 (the negative number), the result will be positive. Therefore, we have:
\[ -236 + 573 = 337 \]

### Final Answer:
\[ -236 + 573 = 337 \]