Question

Insert parentheses to make the statement true.


12 + 6 x 11 - 7 = 72


12 + (6 x 11) - 7 = 72

12 + 6 x (11 - 7) = 72

(12 + 6) x 11 - 7 = 72

(12 + 6) x (11 - 7) = 72

Answer 1

Let's evaluate each option to see which one makes the statement true.

1. **12 + (6 x 11) - 7**
= 12 + 66 - 7
= 12 + 66 = 78
= 78 - 7 = 71 (this is not equal to 72)

2. **12 + 6 x (11 - 7)**
= 12 + 6 x 4
= 12 + 24 = 36 (this is not equal to 72)

3. **(12 + 6) x 11 - 7**
= 18 x 11 - 7
= 198 - 7 = 191 (this is not equal to 72)

4. **(12 + 6) x (11 - 7)**
= 18 x 4
= 72 (this is equal to 72)

The correct option that makes the statement true is **(12 + 6) x (11 - 7) = 72**.