Will I have loose skin after losing 75 pounds?

Probably but it likely wont be too bad. When I lost 85 pounds my skin became loose but it didn't hang like you see on people that have lost 100+ pounds. Its just not like, pulled tight on my body. I don't know how else to explain it. Its definitely much better than carrying that extra 85 pounds. Lose the weight and don't worry about loose skin. Loose skin is always much better than the extra weight. 

Yes you will, but it probably won't be as bad as you think. 

Loose skin should NOT be a reason not to get to a healthy weight.  If you achieve your weight loss over a year or more (1-2 pounds a week), with a healthy eating plan, and get daily exercise, I think you'll be amazed at how great you'll look.  

Look at YouTube videos of people who've lost 50-100 pounds.  You'll see they don't have huge flaps of skin.  The younger you are and the more elastic your skin is (elastin & collagen), the less likely you are to have extra skin. 

In some cases, people don't get a perfectly flat/tight stomach. Most folks live with that because it is such a minor thing and other save up and get a tummy tuck surgery. 

Don't look for reason not to take this journey!  Your health is a serious risk. You will be so much happier, feel stronger and more confident, have energy and so much more if you take control now and get going!

https://www.youtube.com/watch?v=T4G_SlkVWSo

https://www.youtube.com/watch?v=xvxo77kSsjM

It's possible. It's more likely if you try to to crash diet and lose the weight too quickly. Stick to a healthy, maintainable plan of losing 1 to 2 lbs per week.