If  signs ‘+’ and ‘–’ and numbers 4 and 12 interchange between each other, then which one of the following four equation would be correct ?

4 ÷ 8 – 12 = 5.5

Option (1)

⇒ 4 - 8 ÷ 12 = 16

12 + 8 ÷ 4 = 12 + 2 = 14 ≠ 16

Option (2)

⇒ 8 - 4 ÷ 12 = 2.3

8 + 12 ÷ 4 = 11 ≠ 2.3

Option (3)

⇒ 4 ÷ 8 - 12 = 5.5

12 ÷ 8 + 4 = 1.5 + 4 = 5.5

Option (4)

⇒ 8 ÷ 4 - 12 = 3.6

8 ÷ 12 + 4 = 0.66 + 4 = 4.66

So, option 3 is correct.