To add the fraction 105-22/42, we need to find a common denominator. The common denominator for 42 and 1 is 42.

105/1 - 22/42 = (105*42)/42 - 22/42

= 4410/42 - 22/42

Now that we have a common denominator, we can subtract the numerators:

= (4410 - 22)/42

= 4388/42

Simplifying the fraction, we get:

= 104/1

Therefore, 105 - 22/42 = 104/1.