To add these fractions together, we need to find a common denominator.

The least common multiple of 3, 4, 12, 6, and 6 is 12.

So, we need to rewrite the fractions using 12 as the denominator:

1/3 = 4/12
1/4 = 3/12
1/12 = 1/12
1/6 = 2/12
1/6 = 2/12

Adding them together:

4/12 + 3/12 + 1/12 + 2/12 + 2/12 = 12/12

Therefore, 1/3 + 1/4 + 1/12 + 1/6 + 1/6 = 12/12 = 1.