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How to Convert Fahrenheit to Celsius (Centigrade)

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Depending on where you live, 32 degrees can mean either warm or wintry. Here is a simple formula for converting Fahrenheit temperatures into Celsius.
What you'll need: 
A calculator
A pen and paper
An abacus (if you're really old-school!)
To begin, subtract 32 from the Fahrenheit number. (Example: 90 – 32 = 58)
Divide this answer by 9. (Example: 58 ÷ 9 = 6.44)
Finally, multiply this result by 5. (Example: 6.44 x 5 = 32.2) This is your original number in degrees Celsius.


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