Which formula converts Fahrenheit to Celsius?

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Multiple Choice

Which formula converts Fahrenheit to Celsius?

Explanation:
To convert Fahrenheit to Celsius, you first remove the 32-degree offset that marks the freezing point in Fahrenheit, and then you scale by 5/9 because a Fahrenheit degree is larger than a Celsius degree by a factor of 9/5. This gives the formula C = 5/9(F − 32). For example, a Fahrenheit temperature of 68 converts to Celsius as C = 5/9(68 − 32) = 5/9(36) = 20°C. A boiling point example: F = 212 gives C = 5/9(180) = 100°C. The other forms either convert the opposite direction (Celsius to Fahrenheit) or mix the operations in the wrong order or with the wrong signs, so they don’t produce the correct Celsius value from Fahrenheit.

To convert Fahrenheit to Celsius, you first remove the 32-degree offset that marks the freezing point in Fahrenheit, and then you scale by 5/9 because a Fahrenheit degree is larger than a Celsius degree by a factor of 9/5. This gives the formula C = 5/9(F − 32).

For example, a Fahrenheit temperature of 68 converts to Celsius as C = 5/9(68 − 32) = 5/9(36) = 20°C. A boiling point example: F = 212 gives C = 5/9(180) = 100°C.

The other forms either convert the opposite direction (Celsius to Fahrenheit) or mix the operations in the wrong order or with the wrong signs, so they don’t produce the correct Celsius value from Fahrenheit.

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