-20f to c

Step 1: Identify the conversion factor

The conversion factor from fahrenheit to celsius is:

1 fahrenheit = 1.444 celsius

Step 2: Set up the calculation

To convert -20 fahrenheit to celsius, multiply -20 by the conversion factor 1.444:

-20×1.444

Step 3: Calculate

-20×1.444=-28.889

Step 4: Round the result

The result is approximately: -29 celsius

Final Answer:

-20 fahrenheit is approximately -29 celsius.