Example:
convert 37° Celsius to Fahrenheit 37 x 9 = 333 333 / 5 = 66.6 66.6 + 32 = 98.6 therefore, 37°C is equal to 98.6°F
convert 98.6° Fahrenheit to Celsius. 98.6 - 32 = 66.6 66.6 / 9 = 7.4 7.4 x 5 = 37 therefore, 98.6°F is equal to 37°C