Which two digits and signs can be interchanged so as to balance the given equation?
25 - 9 + 42 ÷ 6 × 7 = 17
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 5 and 7; - and ÷
Given equation: 25 - 9 + 42 ÷ 6 × 7 = 17
Option 1: 5 and 7; - and ÷
After interchanging two digits and signs:
27 ÷ 9 + 42 - 6 × 5 = 15
3 + 42 - 30
45 - 30 = 15