Fill the blanks with `lt, gt` sign :
`{:(a.,-4 "______"-9,b.,-12"_______"-3,c.,-5"________"3),(d.,8"________"-4,e.,0"_________"-10,f.,-6"________"-18),(g.,-22"________"-12,h.,13"_______"-10,i.,-28"________"2):}`

Answer

To fill in the blanks with the appropriate `lt` (less than) or `gt` (greater than) signs for the given pairs of integers, we can follow these steps:

### Step-by-Step Solution:

1. **Compare -4 and -9**:
- On the number line, -4 is to the right of -9.
- Therefore, -4 is greater than -9.
- Fill in the blank: `-4 gt -9`

2. **Compare -12 and -3**:
- On the number line, -12 is to the left of -3.
- Therefore, -12 is less than -3.
- Fill in the blank: `-12 lt -3`

3. **Compare -5 and 3**:
- On the number line, -5 is to the left of 3.
- Therefore, -5 is less than 3.
- Fill in the blank: `-5 lt 3`

4. **Compare 8 and -4**:
- On the number line, 8 is to the right of -4.
- Therefore, 8 is greater than -4.
- Fill in the blank: `8 gt -4`

5. **Compare 0 and -10**:
- On the number line, 0 is to the right of -10.
- Therefore, 0 is greater than -10.
- Fill in the blank: `0 gt -10`

6. **Compare -6 and -18**:
- On the number line, -6 is to the right of -18.
- Therefore, -6 is greater than -18.
- Fill in the blank: `-6 gt -18`

7. **Compare -22 and -12**:
- On the number line, -22 is to the left of -12.
- Therefore, -22 is less than -12.
- Fill in the blank: `-22 lt -12`

8. **Compare 13 and -10**:
- On the number line, 13 is to the right of -10.
- Therefore, 13 is greater than -10.
- Fill in the blank: `13 gt -10`

9. **Compare -28 and 2**:
- On the number line, -28 is to the left of 2.
- Therefore, -28 is less than 2.
- Fill in the blank: `-28 lt 2`

### Final Answer:
The filled blanks are:
- (a) -4 `gt` -9
- (b) -12 `lt` -3
- (c) -5 `lt` 3
- (d) 8 `gt` -4
- (e) 0 `gt` -10
- (f) -6 `gt` -18
- (g) -22 `lt` -12
- (h) 13 `gt` -10
- (i) -28 `lt` 2