Which of the two mathematical signs should be reciprocated to correct the following equation?
15 - 21 + 40 - (√2401 ÷ 7) × 549 ÷ 61 × 331 = 255
1
- and +
2
× and +
3
- and ÷
4
× and -
Which of the two mathematical signs should be reciprocated to correct the following equation?
15 - 21 + 40 - (√2401 ÷ 7) × 549 ÷ 61 × 331 = 255