How can you get stronger abs without losing weight fast?

i am so skinny im un healthy so i want abs without losing weight how and fast?

get ankle weights and adjust the amount of weight you can handle and do 20 situps 3 reps then do 20 leg lifts 3 reps and you will get those abs in no time you start seeing results in a week. If you do it every other day.

How to (lose weight) fast (I lost 30 pounds)