Correct the following equation by interchanging the two signs:
5 × 15 ÷ 7 - 20 + 4 = 77
Answer & explanation
Correct answer: option 3
Given equation: 5 × 15 ÷ 7 - 20 + 4 = 77
Interchanging signs: (÷ and +)
5 × 15 + 7 – 20 ÷ 4
According to BODMAS rule.
5 × 15 + 7 – 20 ÷ 4
= 5 × 15 + 7 – 5
= 82 - 5
= 77