Practice #13
28
-28
-2
2
Practice #6
3
-3
-11
11
Practice #12
22
-22
-4
4
Practice #3
2
-2
-14
14
Question 14
-4
-10
10
4
Question 12
8
-8
12
-12
Practice #7
-14
-4
14
4
Practice #9
-16
-21
16
-11
Practice #10
10
-2
-10
2
Question 7
-16
16
44
-44
Practice #1
-1/13
1/13
13
-13
Practice #20
-1
34
0
-34
Question 8
-6
-8
2
6
Question 6
44
16
-44
-16
Practice #4
2
-10
10
-2
Question 10
2
10
-2
-10
Practice #16
82
-82
-48
48
Question 11
-3
3
11
-11
Question 13
10
-10
-4
4
Practice #14
-14
31
-31
14
Question 1
-1/7
7
-7
1/7
Question 3
-6
6
-1/6
1/6
Practice #11
-11
35
11
-35
Practice #18
-23
23
9
-9
Question 2
7
-1/7
1/7
-7
Practice #5
-18
0
18
-1
Practice #2
-1/8
1/8
8
-8
Practice #17
-8
8
-12
12
Question 5
23
6
5
-23
Practice #15
-12
12
32
-32
Practice #19
5
-5
7
-7
Question 9
-6
2
-2
6
Question 4
1/6
-6
-1/6
6
Practice #8
-13
13
-7
7