Which of the following interchange of signs would make the given equation correct?
320 × 4 − 16 ÷ 4 + 2 = 18
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. ÷ and ×.
Given equation: 320 × 4 − 16 ÷ 4 + 2 = 18
Option 1: ÷ and ×
After interchanging the expression becomes:
= 320 ÷ 4 − 16 × 4 + 2 = 18
= 80 − 16 × 4 + 2
= 80 − 64 + 2
= 18 is equal to 18.
As we have found our answer, there is no need to check further options.
Hence, option 1 is the correct answer.