How do you reduce a list of tuplies in Python 3? : Input

```in = [(1, 2), (1, 4), (1, 6)]```

Expected Output

```(3, 12)```

I've tried

```print(reduce(lambda a, b: (a[0] + b[0], a[1] + b[1]), in))```

and

```print(reduce(lambda (a, b), (c, d): (a + c, b + d), in))```

both of which fail due to invalid syntax.