You are measuring temperature using a thermometer that gives degrees in Fahrenheit. You want to know what the temperature is in degrees Celsius. This formula converts temperatures from degrees Celsius to degrees Fahrenheit:. Rewrite this formula to convert Fahrenheit to Celsius. In your answer, use fractions instead of decimal numbers.

The correct answer is ºC = (ºF - 32) / (9/5)

Explanation:

1. This is the formula to convert temperatures from degrees Celsius to Fahrenheit:

ºF = (ºC * 9/5) + 32

If the temperature is 20 degrees Celsius, let's use the formula:

ºF = (20 * 9/5) + 32

ºF = 36 + 32

ºF = 68

2. And the formula to convert temperatures from degrees Fahrenheit to Celsius is:

ºC = (ºF - 32) / (9/5)

If the temperature is 50 degrees Fahrenheit, let's use the formula:

ºC = (50 - 32) / (9/5)

ºC = 18 / (9/5)

ºC = 18 * 5/9

ºC = 10