using System;
using System.Collections.Generic;
using System.Text;

namespace Section28.DemoUnitTest.CLB
{
    public  class MathClass
    {
        public int Add(int x, int y)
        {
            return x + y;
        }
        public int Subtract(int x, int y)
        {
            return x - y;
        }
    }
}
