GABRIEL

def __add__(self, other): # enables +
        x = lcm(self.denom, other.denom)
        f1 = x // self.denom
        f2 = x // other.denom
        return Rational(self.number * f1 + other.numer * f2, x).reduce()

    def __sub__(self, other): # enables -
         x = lcm(self.denom, other.denom)
        f1 = x // self.denom
        f2 = x // other.denom
        return Rational(self.number * f1 - other.numer * f2, x).reduce()

    def __mul__(self, other): # enables *
        return Rational(other.numer * self.numer, other.denom * self.denom)

    def __truediv__(self, other): # enables /
        return Rational(self.numer * other.denom, self.denom * other.numer)

    def reduce(self):
        x = gcd(self.numer, self.denom)
        return Rational(self.numer // x, self.denom // x)