If someone could explain to me how to get the right answer on these i would really appreciate it

You’re finding the least common denominator do you have to find what number the denominators can go into evenly. For example number one: 4 and 6 go into 12

1/4, multiply both top and bottom by 3.
That will give you 3/12

Now te same for 5/6. Now multiply both top and bottom by 2 and the equals 10/12

Final answer 3/12, 10/12.
If you need more help just comment! :)

Iwould think that the correct answer is 8.1