Multiple Interface Inheritance with method body

Question

Suppose I have these 2 Interfaces.

public interface IMath2
{
    int GetSum(int x, int y)
    {
        return x + y;
    }
}

public interface IMath1
{
    int GetSum(int x, int y)
    {
        return x + y;
    }
}

and One class with inherit Imath1 and Imath2.

public class Math : IMath1,IMath2
{
    int x = 5, y= 6;
    int z = GetSum(x,y);
}

Here, I can't access the GetSum method from parent Interfaces. Please provide solutions.

Answer 1

Here's a working example:

void Main()
{
    var m = new Math();
    m.ExampleGetSum(1, 2);
}

public interface IMath2
{
    int GetSum(int x, int y)
    {
        return x + y + 2;
    }
}

public interface IMath1
{
    int GetSum(int x, int y)
    {
        return x + y + 1;
    }
}

public class Math : IMath1, IMath2
{

    public void ExampleGetSum(int x, int y)
    {
        int z1 = (this as IMath1).GetSum(x, y);
        int z2 = (this as IMath2).GetSum(x, y);

        Console.WriteLine(z1);
        Console.WriteLine(z2);
    }
}

That give me this output:

4
5