The expression 5(F-32) divided by 9 yes the Celsius temperature for a Fahrenheit temperature of F degrees C noon Fahrenheit temperature in Centerville was 86° what was the temperature in degrees Celsius

Substitute the given information into the formula and do the arithmetic.
  5(86 -32)/9 = 5(54/9) = 5(6) = 30

The temperature was 30 °C.