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How much is 90 degrees Fahrenheit in Celsius?
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Answer

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Step 1:
: Recall the formula to convert temperature from Fahrenheit to Celsius:

where $T_{F}$ is the temperature in Fahrenheit and $T_{C}$ is the temperature in Celsius.

Step 2:
: Plug in the value for Fahrenheit:

T_{C} = \frac{5}{9} (90 - 32)

Step 3:
: Calculate the expression inside the parentheses:

T_{C} = \frac{5}{9} (58)

Step 4:
: Multiply the numbers:

T_{C} = \frac{290}{9}

Step 5:
: Simplify the fraction:

T_{C} = 32 + \frac{5}{9}

Step 6:
: Convert the fraction into a decimal:

T_{C} \approx 32.22

Final Answer

90 degrees Fahrenheit is approximately 32.22 degrees Celsius.