(56-47):6•9=

To solve the expression \((56-47):6\cdot9\), we follow the order of operations (parentheses, exponents, multiplication and division from left to right, addition and subtraction from left to right).

1. First, perform the operation inside the parentheses:
   \(56 - 47 = 9\)

2. Now, replace the expression with the result:
   \(9 : 6 \cdot 9\)

3. Next, perform the division:
   \(9 : 6 = 1.5\)

4. Finally, multiply by 9:
   \(1.5 \cdot 9 = 13.5\)

So, \((56-47):6\cdot9 = 13.5\).