What is the equivalent for expression-bodied members in old C# versions?

Question

In new versions of C# I have discovered recently that exist what is called expression-bodied-members as explained here.

An example of expression-bodied-members would be (for a getter property only):

private int _x;
public int X
{
    get => _x;
}

Is above expression-bodied-member equivalent to below old C# versions?

private int _x;
public int X
{
    get
    {
       return _x;
    }
}

Answer 1

These are all equivalent:

private int _x;
public int X => _x;

private int _x;
public int X
{
    get => _x;
}

private int _x;
public int X
{
    get
    {
        return _x;
    }
}

Answer 2

Yes, these expressions are equivalent. Because expression-bodied-members do the same, but only for the single expression.