345a:236h-(+56) =

To solve this expression, follow the order of operations - parentheses, exponents, multiplication/division (left to right), and addition/subtraction (left to right).

The expression 345a:236h-(+56) can be simplified as follows:

1. Simplify the addition inside the parentheses: (+56) = 56.

2. Next, perform the division: 345a divided by 236h. However, since the values of 'a' and 'h' are not provided, we cannot simplify this further. Therefore, the expression remains as 345a: 236h.

So, the simplified expression is 345a: 236h - 56.