✔ 最佳答案
According to the BODMAS Rule, - 7 - 7 × 7 - 7 ÷ 7 should be bracketed as:
- 7 - (7 × 7) - (7 ÷ 7) where you've to do the divison first and then the multiplication.
By doing this, you get: - 7 - (49) - (1).
Now, since you've all the signs similar, you can remove the brackets. You will then get: - 7 - 49 - 1, which equals -57. Hope my answer was clear.