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Write a function `flatten_to_set` that takes a list of lists (or tuples) of numbers and returns a set containing all unique numbers from the input.
#### Example Usage
```python [main.nopy]
flatten_to_set([(3, 4, 5), (4, 5, 7), (1, 4)])
# Output: {1, 3, 4, 5, 7}
flatten_to_set([(1, 2, 3), (4, 2, 3), (7, 8)])
# Output: {1, 2, 3, 4, 7, 8}
flatten_to_set([(7, 8, 9), (10, 11, 12), (10, 11)])
# Output: {7, 8, 9, 10, 11, 12}
```def flatten_to_set(list_of_lists):
"""
Flattens a list of lists or tuples into a single set of unique numbers.
Args:
list_of_lists (list): A list containing lists or tuples of numbers.
Returns:
set: A set containing all unique numbers from the input.
"""
# Placeholder for the solution
pass