For the following problem, which operation should be done first? 42 : (12 : 2)

Answer: The expression in the parenthesis should be done first.

Here are the steps on how to solve it in order:

42 : (12 : 2)

Step 1: 42 : (6) We divided 12 by 2 because it was in parenthesis.

Step 2: 42 : 6 = 7 Now we divide 42 by 6 which is 7.

12 : 2 should be done first