Answer:
1 17/168
Step-by-step explanation:
3 1/3 is the same as 3 4/12
-2 1/4 is the same as -2 3/12
3 4/12 + (-2 3/12) = 1 1/12
1 1/12 + 1/56 = 13/12 + 1/56
we can use 168 as a common denominator to get:
13/12 = 182/168
1/56 = 3/168
add the above together to get 185/168 which is 1 17/168
