-40f to c

Step 1: Identify the conversion factor

The conversion factor from fahrenheit to celsius is:

1 fahrenheit = 1 celsius

Step 2: Set up the calculation

To convert -40 fahrenheit to celsius, multiply -40 by the conversion factor 1:

-40×1

Step 3: Calculate

-40×1=-40

Step 4: Round the result

The result is approximately: -40 celsius

Final Answer:

-40 fahrenheit is approximately -40 celsius.