72:8*7-(45:9+3*3:2

To solve the expression \(72 : 8 * 7 - (45 : 9 + 3 * 3 : 2)\), we will follow the order of operations (PEMDAS/BODMAS).

1. Division and Multiplication from left to right:

   • \( 72 : 8 = 9 \)
   • \( 9 * 7 = 63 \)
   • Next, calculate the expression inside the parentheses:
     • \( 45 : 9 = 5 \)
     • \( 3 * 3 = 9 \)
     • So we need to calculate \( 9 : 2 = 4.5 \)

   Now add these results:

   • \( 5 + 4.5 = 9.5 \)

2. Substitute back into the expression:

   • \( 63 - 9.5 \)

3. Final subtraction:

   • \( 63 - 9.5 = 53.5 \)

So, the final answer is:

\[ \boxed{53.5} \]