Shana, who lives in Canada, and Pearl, who lives in Pennsylvania, were discussing the weather. Shana complained about the cold temperature of -20°C. Pearl, who lives in Pennsylvania, mentioned that her temperature was the
opposite of Shana's. Which is the correct way to represent the opposite of Shana's temperature is equal to Pearl's"?
-20 - 20
O-(-20) =-20
O -(20) --20
-(-20) = 20