Answer:
Using free weights you can use a variety of movements and range of motion. You can target which muscles you want to work out while using the free weights if you use them properly. Machine weights limit movement and can be safer to use for a beginner in the gym. Machine weights have instructional pictures and show you what exact motion to use while your workout. They also provide a picture that shows you which muscles you will be targeting during the workout. Both are beneficial and effective if used properly. Usually Machine weights are more commonly used but free weights are also used during most workouts.