Which two signs should be interchanged to make the given equation correct?
156 – 13 + 9 × 18 ÷ 5 = 169
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. ÷ and –.
Given equation: 156 – 13 + 9 × 18 ÷ 5 = 169
Let us check all the options:
Option 1: × and –
The expression becomes:
= 156 × 13 + 9 - 18 ÷ 5 = 169
= 2033.4 is not equal to 169.
Option 2: ÷ and –
= 156 ÷ 13 + 9 × 18 - 5 = 169
= 169 is equal to 169.
As we have found our answer, we need not check the other options.
Hence, option 2 is the correct answer.