1) What you see as 3

can be also changed to only a fraction, by changing

to

, but since the question wants 2 as a whole number, we must take out

and then add the 8 eights to the other 3, to get <span>
</span>for # 10- 13, you need to have the same number on the bottom of all the numbers being subtracted, that means turning the number that aren't fractions (like 4) into fraction, and then into fractions with the same denominators.
10)

changes to

to get

or

11)

changes to

, and

to

to get

or <span>

</span>