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The starting point is that 0 Celsius equals 32 Fahrenheit. One degree Celsius is of higher value than one degree Fahrenheit. So, going less than zero on centigrade, the rate of decrease on Celsius is less than the rate of dgress of Fahrenheit until it comes the point of -40 degrees Celsius when both scales match together.

Mathematically,

F = C x 9/5 +32

Where F is degrees Fahrenheit and C degrees Celsius


Accordingly,

-40 degrees Celsius = 32 - 40 x 9/5 = -40 degrees Fahrenheit
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14y ago
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13y ago

To convert from Celsius to Fahrenheit, multiply by 9, divide by 5, and add 32. Therefore, -40 Celsius is equal to -40 x 9 = -360/5 = -72 + 32 = -40 degrees Fahrenheit.

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15y ago

They don't.

They only share one negative value. -40º is the same on both scales.

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14y ago

(-40) degrees Fahrenheit = -40 degrees Celsius.

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12y ago

There is only one temperature where the Fahrenheit and Celsius numbers are the same.

That's -40 degrees.

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Q: Why there is no difference between Fahrenheit and centigrade when temperature is minus figure?
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