Added tests for add, divide, subtract, absValue and negate
Removed the unnecessary { from the line 94
Added missing brackets in getDenominator() and getNumerator() in the methods absValue and negate
Reduced amount of code for absValue()
Replaced int num as int denom for both absValue() and negate()
Added new fractions i and j. Also added extra tests for the new methods on line 24 to line 29
Fixed multiple errors in namings on absValue() and negate()
Fixed an error on line 96
Added comments on the expected results for the new tests