### Question

**If signs ‘+’ and ‘-‘ and numbers 4 and 8 interchange with each other, then which one of the following four equations would be correct?**

A. 4 ÷ 8 - 12 = 18

B. 8 - 4 ÷ 12 = 8

C. 4 - 8 + 12 = 0

D. 8 ÷ 4 -12 = 24

**Answer:** C

**Solution:**

Given, 4 – 8 + 12 = 0

On interchanging signs ‘+’ and ‘-‘ and number 4 and 8 in option (c), we get

-> 8 + 4 – 12 = 0

-> 12 -12 = 0

-> 0 = 0