Which two signs should be interchanged to make the below equation mathematic:
26 − 13 + 18 ÷ 54 × 24 = 31
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. − and +.
Given equation: 26 − 13 + 18 ÷ 54 × 24 = 31
Option 1: − and +
After interchanging the expression becomes:
= 26 + 13 - 18 ÷ 54 × 24 = 31
= 26 + 13 - 8
= 39 - 8
= 31 = 31
As we have found our answer, there is no need to check further options.
Hence, − and + is the correct answer.