Im having trouble of doing these problems. I dont really know the steps of how you do them. So if someone could help me Id really appreciate it.

Ive scanned the problems from my math book so if anyone could help that beeee soo great!!

1.

2. http://img89.imageshack.us/img89/4430/problem1nm0.jpg

3. http://img84.imageshack.us/img84/7219/problem2cn2.jpg

http://img84.imageshack.us/img84/2640/problem3ai8.jpg