Proportions
3/5 = x/10
x=6
1/3 + 1/3
2/3
3/4 x 4/5
12/20 -> 3/5
4/5 divided by 9/5
20/27
7/11 + 2/5
57/55
5/8 = x/32
x=20
2/5 + 4/5
6/5
2/3 x 3/5
6/15 -> 2/5
1/4 divided by 7/9
9/28
4/10 + 3/5
10/10 -> 1
x/7 = 8/28
x=2
3/2 - 1/2
2/2 -> 1
1/6 x 2/9
2/54 -> 1/27
5/6 divided by 10/12
60/60 -> 1
3/8 + 1/4
5/8
6/x = 30/50
x=10
5/4 - 3/4
2/4 -> 1/2
4/9 x 7/8
28/72 ->7/18
6/10 divided by 3/7
42/30 -> 7/5
2/3 + 8/9
14/9
4/x = 8/14
x=7
5/10 + 3/10
8/10 -> 4/5
8/9 x 7/6
56/54 -> 28/27
6/5 divided by 3/8
42/15 -> 14/5
5/6 + 7/12
17/12