Which of the following interchanges of signs would make the given equation correct?
3 − 15 + 10 ÷ 2 × 7 = 43
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. − and ×.
3 − 15 + 10 ÷ 2 × 7 = 43
After interchanging the mathematical sign we get;
⇒ 3 × 15 + 10 ÷ 2 - 7 = 43
⇒ 45 + 5 - 7 = 43
⇒ 43 = 43