Which two signs should be interchanged to make the equation mathematically correct?
24 − 36 × 5 + 108 ÷ 18 = 18
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. + and ×.
Given equation: 24 − 36 × 5 + 108 ÷ 18 = 18
Option 1: + and ×
After interchanging the expression becomes:
= 24 − 36 + 5 × 108 ÷ 18 = 18
= 24 − 36 + 5 × 6
= 24 − 36 + 30
= 18 = 18
As we have found our answer, there is no need to check further options.
Hence, + and × is the correct answer.