refactoring: Avoided Duplication of Code in Function addFractions by utilizing the already implemented functions

src/main/py/fractions.py

@@ -16,13 +16,13 @@ def reduceFraction(num, denom):
 def addFractions(num1, denom1, num2, denom2):
     if denom1 != denom2:
         fractionExpansionFactor = lcm(denom1, denom2)
-        frac1Offset = fractionExpansionFactor / denom1
-        frac2Offset = fractionExpansionFactor /denom2
-        num1 *= frac1Offset
-        denom1 *= frac1Offset
-        num2 *= frac2Offset
-        denom2 *= frac2Offset
-    result_num = num1 + num2
+        frac1Offset = divide(fractionExpansionFactor, denom1)
+        frac2Offset = divide(fractionExpansionFactor, denom2)
+        num1 = multiply(num1, frac1Offset)
+        denom1 = multiply(denom1, frac1Offset)
+        num2 = multiply(num2, frac2Offset)
+        denom2 = multiply(denom2, frac2Offset)
+    result_num = add(num1, num2)
     return reduceFraction(result_num, denom1)
 
 def multiplyFractions(num1, denom1, num2, denom2):