Can someone please help me with number 3 and 4, and show work. I know I’m bad at math

Answer:
3. is 2/4 is the first one, 2/6 is the sencond one, and the last on efor number three is 2/8. i dont know number 4. , sorry:(
Step-by-step explanation:so what u do to get 2/4 is that u find the common denominator for 1/2 which is 2 times 2 is 4 and 1 times 2 is 2 so then i did the same think to the rest.