If × means −, − means ÷, ÷ means +, and + means ×, then 28 × 12 − 2 ÷ 3 + 5 = ?

Explanation

Replace the operators as instructed: ×→−, −→÷, ÷→+, and +→×. Thus

28 × 12 − 2 ÷ 3 + 5 becomes

28 − 12 ÷ 2 + 3 × 5.

Using BODMAS: 28 − 6 + 15 = 37.