public void Test()
        {
            var lst = new long[, ] {
                { 1, 2 }, { 1, 3 }, { 1, 4 }
            };
            var lst2 = new long[, ] {
                { 69, 130 }, { 87, 1310 }, { 3, 4 }
            };

            Assert.AreEqual("(6,12)(4,12)(3,12)", CommonDenominator.convertFrac1(lst));
            Assert.AreEqual("(18078,34060)(2262,34060)(25545,34060)", CommonDenominator.convertFrac1(lst2));
        }
 public void TearDown()
 {
     _commonDenominator = null;
 }
 public void SetUp()
 {
     _commonDenominator = new CommonDenominator();
 }