equivalent fractions
4/5 = ?/15
12
1/3 + 3/5 =
14/15
7/8 - 1/4 =
5/8
5 and 6
30
3/7 = 9/?
21
3/7 + 1/3 =
16/21
5/6 - 1/2 =
2/6
12 and 16
48
4/9 = ?/45
20
1/6 + 1/4 =
5/12
9/10 - 1/4 =
13/20
11 and 5
55
7/8 = 28/?
32
3/8 + 1/3 =
17/24
4/5 - 2/3 =
2/15
14 and 4
28
?/24 = 3/8
9
3/4 + 1/8 =
7/8
7/8 - 2/3 =
5/24
6 and 15
30