Question

Jeremy left the house in the morning and the temperature outside was 2 degrees Celcius. Once he returned at night, the temperature was -7 degrees Celcius.

How much did the temperature decrease by?

Answer 1

9 degrees Celcius

Explanation:

The difference between 2 and -7 is 9.

Answer 2

The temperature decreased by 9 degrees.

Explanation:

Since the temperature in the morning was 2*C & at night, the temperature was -7*C, the temperature had to decrease using this equation => ||-7 + 2|| = x, with -2 being the temperature loss added as well. All we have to do is 7+2 = x & 9 = x, with x being the temperature drop.