Well you see the first question says 9 5/8 - 3 3/8.The first step is too minus 9 and 3.Which that would be 6. next is 5-3 which would be 2.Next is 8 -8 which is 0. The answer then is 6 2/0.Second question is 6-2 which is 4.Next is 7-3 which is 4. then 8-8 which is 0.the answer to that is 4 4/0.Hope this helps! (;