Which two numbers from among the given options should be interchanged to make the given equation correct?
126 ÷ 23 – 138 ÷ ( 5 × 4 – 6) + 4 = 1
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 138 and 126.
Given equation: 126 ÷ 23 – 138 ÷ ( 5 × 4 – 6) + 4 = 1
Option 1: 138 and 126
After interchanging the expression becomes:
= 138 ÷ 23 – 126 ÷ ( 5 × 4 – 6) + 4 = 1
= 138 ÷ 23 – 126 ÷ ( 20 – 6) + 4
= 138 ÷ 23 – 126 ÷ 14 + 4
= 6 – 9 + 4
= 1 is equal to 1.
As we have found our answer, there is no need to check further options.
Hence, option 1 is the correct answer.