Question

Place parentheses around the expression from the previous problem so when simplified it is equal to 13.

15 - 6 + 1 +30 ÷ 3 × 2 (This is the expression from the previous problem just to clarify.)​

Answer 1

15 - (6 + 1) + 30 ÷ (3 × 2)

Explanation:

Answer 2

Answer: 15 - (6 + 1) + 30 ÷ (3 × 2)

Explanation:

The simplest way is just to [try check and revise]. Place parentheses on each two numbers and try.

However, there is a somewhat trick involved.

Normally, when a question asks for adding parentheses, the parentheses are normally placed on two numbers that don't usually operate together.

• For example, in this question, [15 - 6 + 1]. Normally, is should be 15-6 which is 9. Then 9+1 is 10. Also, usually when you add parentheses on -6+1, it will change signs into -(6-1). But, in this question, when we add parentheses, signs don't change. So it is -(6+1).

Hope this helps!! :)