text: /*
   1. function benefits
    -> better code oragnization
    -> code reuse
    -> easier debug
   degCent = 5/9 * (degFahren - 32);
   degFahren = (9/5 * degCent) + 32  
  */
  
  function toCentigarde(degFahren) {
      var degCent;
      degCent = 5/9 * (degFahren - 32);
      return degCent;
  }
  
  function toFarenheit(degCent) {
      var degFahren;
      degFahren = (9/5 * degCent) + 32 ;
      return degFahren;
  }
  
  console.log('20 f to c:', toCentigarde(20));
  console.log('45 c to f:', toFarenheit(45));