At what temperature will Fahrenheit and Celsius thermometers display the same reading?
-40
As we have formula for converting temperature C= F-32x5/9
so if we put the value -40 in Fahrenheit
C=-40-32x5/9
C=-72x5/9
C=-360/9
C=-40
and in other formula F=Cx9/5+32
so put the same value
F=-40x9/5+32
F=-360/5+32
F=-72+32
F=-40
So here prove that -40C=-40F
what is this in english i just have to ask