Can someone me with my math homework i don't get it and can you explain how you did it. also only me with the highlighter

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  

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 

The answer is 1532.75