using System;
using System.Linq;
using System.Linq.Expressions;


public class Test
{
	public static void Main()
	{

ParameterExpression p = Expression.Parameter(typeof(int));
BinaryExpression b1 = Expression.MakeBinary(ExpressionType.Multiply, p, Expression.Constant(5));//(10*5)
BinaryExpression b2 = Expression.MakeBinary(ExpressionType.Divide, Expression.Constant(9), Expression.Constant(4));//(9/4)
BinaryExpression b4 = Expression.MakeBinary(ExpressionType.Add, b1, b2);
var compiledLambda = (Func<int,int>)Expression.Lambda<Func<int,int>>(b4, new[] {p}).Compile();
Console.WriteLine(compiledLambda(10));
Console.WriteLine(compiledLambda(8));


	}
}