To complete the new expression based on the teacher's instructions, we first need to evaluate what the initial expression (8 - 2) is equal to:
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Calculate (8 - 2):
- 8 - 2 = 6
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Next, according to the teacher's instruction, we need to take away 5 from 3 times this value:
- 3 times the value of (8 - 2) is 3 * 6 = 18.
- Then we take away 5: 18 - 5.
Putting it all together, the completed expression is:
(3 * (8 - 2)) - 5
So, the final expression is:
(3 * 6) - 5 = 18 - 5 = 13.