1. The problem is to convert a temperature from Fahrenheit (F) to Celsius (C). 2. The formula to convert Fahrenheit to Celsius is: $$ C = \frac{5}{9} (F - 32) $$ 3. To convert, subtract 32 from the Fahrenheit temperature. 4. Multiply the result by \(\frac{5}{9}\). 5. This will give you the temperature in Celsius. Example: Convert 68°F to Celsius. $$ C = \frac{5}{9} (68 - 32) = \frac{5}{9} \times 36 = 20 $$ So, 68°F is equal to 20°C.