Question

Between noon and 9pm the temperature dropped 10°F. If the temperature was -4°F at 9pm what was the temperature at noon ?

Answer 1

6F

Explanation:

Let x be the temperature at noon

dropping means we subtract

The temperature at 9 pm was -4. That goes on the right hand side of the equals

x-10 = -4

Add 10 to each side

x-10+10 = -4+10

x = 6

The temperature at noon was 6 F