Simple Python solution, no Fraction, and for people who are not familiar with Regular Expression.
If you like it, please give me an upvote.\n\n    def fractionAddition(self, expression):\n        def gcd(i, j):\n            while j: i, j = j, i%j\n          
If you like it, please give me an upvote.\n```\n    def fractionAddition(self, expression):\n        def gcd(i, j):\n            while j: i, j = j, i%j\n            return i\n        lst = expression.replace("+", " +").replace("-", " -").split()\n        A, B = 0, 1\n        for num in lst:\n            a, b = num.split("/")\n            a, b = int(a), int(b)\n            A = A*b+B*a\n            B *= b\n            devisor = gcd(A, B)\n            A /= devisor; B /= devisor\n        return str(A) + "/" + str(B)\n```
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