I keep getting a "unepected symbol ';' in class, struct or interface member " error i dont understand why

using UnityEngine;
using System.Collections;

public class scrollSpeed : MonoBehaviour {
	scrollSpeed;
	// Use this for initialization
	void Start () {
		transform.Translate (new Vector3 (-1, 0, 0) * Time.deltaTime * scrollSpeed);
	
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}

As other have pointed out:

You have an unspecified variable that has the same name as the class on line 5. Change the variable name and specify it’s type.

 public class scrollSpeed : MonoBehaviour {
    float speed = 1f;
    // Use this for initialization
    void Start () {
        transform.Translate (new Vector3(-1, 0, 0) * Time.deltaTime * speed);
    }
 }