Write a Python function `noprofit_noloss(actual_cost, sale_amount)` that checks whether a transaction results in no profit and no loss. The function should return `True` if the `sale_amount` is equal to the `actual_cost`, and `False` otherwise.
#### Example Usage
```python [main.nopy]
print(noprofit_noloss(1500, 1200)) # Output: False
print(noprofit_noloss(100, 100)) # Output: True
print(noprofit_noloss(2000, 5000)) # Output: False
```
#### Constraints
- Both `actual_cost` and `sale_amount` are non-negative integers.