Adding with Like Denominators
1/4 + 2/4=
3/4
6/7 - 5/7=
1/7
3/4 + 2/12=
11/12
10/12 - 4/6=
1/6
4 4/5 + 5 1/5=
10
12/20 + 2/20=
7/10
14/20 - 10/20=
1/5
2/4 + 4/6=
1 1/6
7/11 - 1/3=
10/33
6 3/6 + 7 4/6=
14 1/6
5/8 + 3/8=
1
13/6 - 1/6=
2
3 3/5 + 4 1/3=
7 14/15
4 3/5 - 3 1/3=
1 4/15
18 1/2
21/30 + 10/30=
1 1/30
4 3/5 - 2 1/5=
2 2/5
8/10 + 4/6=
1 7/15
5 6/7 - 3 2/5=
2 16/35
4 1/5 - 1 3/5=
2 3/5
12 1/9 + 1 2/9=
13 1/3
43/3 - 20/3=
7 2/3
3 12/20 + 9 1/8
12 29/40
12 7/8 - 4 3/9=
7 13/24
8 1/6 - 7 2/9
17/18