Which equation is used for temperature conversion from Fahrenheit to Celsius?

The equation for converting temperature from Fahrenheit to Celsius is given by C = (F - 32) x 5/9. This is the correct formula because it accounts for the difference in the freezing and boiling points of water on the Celsius and Fahrenheit scales.

In the Fahrenheit scale, water freezes at 32 degrees and boils at 212 degrees, while in the Celsius scale, water freezes at 0 degrees and boils at 100 degrees. The formula starts with subtracting 32 from the Fahrenheit temperature to account for the offset between the two scales. After this adjustment, multiplying by 5/9 effectively scales the temperature conversion to reflect the size of the degree intervals on each scale, converting the temperature appropriately into Celsius.

This understanding is crucial for anyone working in pharmacy or healthcare settings, where precise measurements and conversions are important for medication dosages, lab results, and patient education. The other provided equations do not accurately represent the relationship between Fahrenheit and Celsius, thereby making them unsuitable for this conversion.