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Added subtraction #8

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7 changes: 6 additions & 1 deletion Fractions/MyFraction.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,12 @@ def __add__(self, fraction):
return answer

def __sub__(self, fraction):
answer = "Calculate the answer. The answer will be a fraction"
self.difNum = self.numerator*fraction.denominator - fraction.numerator*self.denominator
if not self.difNum:
self.difDen = 0
else:
self.difDen = self.denominator*fraction.denominator
answer = MyFraction(self.difNum, self.difDen)
return answer

def __mul__(self, fraction):
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6 changes: 3 additions & 3 deletions Fractions/Test.py
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Original file line number Diff line number Diff line change
@@ -1,14 +1,14 @@
from MyFraction import MyFraction

def main():
fraction1 = MyFraction(1,2)
fraction1 = MyFraction(1,3)
fraction2 = MyFraction(1,2)

addResult = fraction1 + fraction2
print("Addition result was: " + str(addResult) + ". The correct answer is: 1/1 or 2/2")

#subResult = fraction2 - fraction1
#print("Subtraction result was: " + subResult + ". The correct answer is: 0/0")
subResult = fraction2 - fraction1
print("Subtraction result was: " + str(subResult) + ". The correct answer is: 0/0")

#multResult = fraction1 * fraction2
#print("Multiplication result was: " + multResult + ". The correct answer is: 1/4")
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