9+(9:9)+(9*9)-9=

Assuming ":" means division.

• 9:9 = 1, and 9*9 = 81
• So the expression is 9 + 1 + 81 - 9
• Compute: (9 + 1) + 81 - 9 = 10 + 81 - 9 = 91 - 9 = 82

Answer: 82