On Celsius's original scale, freezing corresponded to 100 and boiling corresponded to 0. a. Write a formula

Question:

On Celsius's original scale, freezing corresponded to 100° and boiling corresponded to 0°.
a. Write a formula that converts a temperature given by today's Celsius scale into the scale that Celsius invented.
b. Explain how you would convert a temperature given in degrees Fahrenheit into a temperature on the original scale that Celsius invented?