To solve this expression, we need to follow the order of operations: parentheses, exponents, multiplication and division (from left to right), and then addition and subtraction (from left to right).

First, evaluate the expression inside the first set of parentheses:
3 12/17 + 2 5/17 = 3 + 2 + 12/17 + 5/17
= 5 + 17/17
= 6

Next, evaluate the expression inside the second set of parentheses:
4,2 - 2 3/5 = 4 + 2 - 2 - 3/5
= 6 - 2 - 3/5
= 4 2/5

Now we substitute these values back into the original expression:
(6) + (4 2/5) ÷ 4
= 6 + 4 2/5 ÷ 4
= 6 + 1 2/5
= 7 2/5

Therefore, the final answer is 7 2/5.