in the equation used for the inter -conversion of the two scales of temperature,why fo we subtract 23 from f?

Question

c/5=f-32/9

Answer 1

Actually, you subtract 32 and the reason you do it is because one of the fixed points - the freezing of water - is offset by 32 from the Celcius reading. The 32 is the starting point of the graph and the 9/5's is the difference in the size of degrees.