Which of the following equations is correct when the numbers 3 and 9 are interchanged and the signs - and × are interchanged?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 12 ÷ 9 - 2 × 7 + 3 = 10.
Option 3) 12 ÷ 9 - 2 × 7 + 3 = 10
When the numbers 3 and 9 are interchanged and the signs - and × are interchanged then,
⇒ 12 ÷ 3 × 2 - 7 + 9 = 10
⇒ 4 × 2 - 7 + 9 = 10
⇒ 8 - 7 + 9 = 10
⇒ 17 - 7 = 10