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At what temperature do the Fahrenheit and celcius scales give the same reading?

Correct Answer: -40 degreees

Explanation:

We want the temperature when F=C.


We know that, F   =   C   x   9 5   +   32


So substituting C For F, we have C = - 40 o


Therefore,  C = -40. 


Thus when C = -40, we have C = F


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