15.4 / 2 - 2 (4.6 - 15.7) =
- -14.5
- 26.5
- 29.9
Explanation
The 2 directly before the bracket means multiply. First 4.6 - 15.7 = -11.1, then 2 * (-11.1) = -22.2, and 15.4 / 2 = 7.7. So 7.7 - (-22.2) = 7.7 + 22.2 = 29.9. Subtracting the negative product is what raises the total.
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