Which two signs need to be interchanged to make the following equation correct?
10 + 23 - 3 × 63 ÷ 7 = 70
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. - and ×.
10 + 23 - 3 × 63 ÷ 7 = 70
After interchanging signs,
⇒ 10 + 23 × 3 - (63 ÷ 7) = 70
⇒ 10 + (23 × 3) - 9 = 70
⇒ 10 + 69 - 9 = 70
⇒ 79 - 9 = 70
⇒ 70 = 70