To convert from degrees Fahrenheit (°F) to degrees Celsius (°C), the correct equation is:
\[ °C = \frac{(°F - 32)}{1.8} \]
From the options provided, the corresponding equation would be:
\[ °F - 32 = °C \times 1.8 \]
Now, to convert 77°F to °C using the equation, we can calculate it as follows:
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Subtract 32 from 77: \[ 77 - 32 = 45 \]
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Divide the result by 1.8: \[ °C = \frac{45}{1.8} = 25 \]
So, 77°F is equal to 25°C. The correct response would involve using the equation \( °F - 32 = °C \times 1.8 \) and the result of 25°C for the conversion.