The low temperature in Anchorage, Alaska today was - 4°F. The low

temperature in Los Angeles, California was 63°F. What is the difference in

the two low temperatures?

Step-by-step explanation:

63 - (-4) = 63 + 4 = 67 <= = a difference of 67

or think of it this way ...

if its at 63, u subtract 63 just to get to 0 ... but then u have to subtract 4 more to get to - 4 ... making a difference of 67