What's the difference between 7 degrees and - 15?

The difference between 7 degrees and - 15 degrees is 22

Step-by-step explanation:

You start calculation from 7 ⇒0⇒-15

The individual differences are 7-0 = + 7, then 0 - - 15 = + 15.

Now, sum up the two differences to get + 7+15 = + 22

Hence the difference is 22 degrees