Verify commutativity of addition of rational numbers for each of the following pairs of rational number :
(i) `(-11)/5a n d4/7`
(ii) `4/9a n d7/(-12)` ​

Explanation

To verify the commutativity of addition of rational numbers for the given pairs, we will follow these steps:

### Pair (i): \(-\frac{11}{5}\) and \(\frac{4}{7}\)

1. **Calculate \(-\frac{11}{5} + \frac{4}{7}\)**:
- Find the LCM of the denominators (5 and 7), which is 35.
- Convert each fraction:
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