Question

(9•6+2):8+(4•5•3):12-(21-21):7

Answer 1

56:8+60:12-0=7+5-0=12

Answer 2

To solve the expression (9•6+2):8+(4•5•3):12-(21-21):7, we follow the order of operations, which is parentheses, multiplication and division (from left to right), and addition and subtraction (from left to right).

Let's break down the expression step by step:

Step 1: Solve the multiplication and division operations within parentheses. 9•6 = 54 4•5•3 = 60 21-21 = 0

The expression now becomes: (54+2):8+(60):12-(0):7

Step 2: Continue with the multiplication and division operations outside the parentheses. 54 + 2 = 56 60:12 = 5 0:7 = 0

The expression now becomes: 56:8+5-0

Step 3: Evaluate the remaining division and addition operations. 56:8 = 7 7 + 5 = 12

The expression simplifies to: 12 - 0

Step 4: Perform the subtraction operation. 12 - 0 = 12

Therefore, the final result of the expression (9•6+2):8+(4•5•3):12-(21-21):7 is 12.