How to remove only the first instance of element in array

using System;
using System.Linq;

namespace FirstInstance
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] numbers = { 1, 3, 4, 9, 2, 4 };
            int numToRemove = 4;
            int numIndex = Array.IndexOf(numbers, numToRemove);
            numbers = numbers.Where((val, idx) => idx != numIndex).ToArray();
        }
    }
}