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분수: 분모가 다른 덧셈6분수1

1
1 3
+
5 7
=
22 21
2
5 7
+
4 4
=
48 28
5
+
4
=
12 7
3
4 4
+
9 2
=
22 4
4
+
9
=
11 2
4
9 2
+
5 4
=
23 4
5
4 3
+
8 9
=
20 9
6
8 9
+
7 4
=
95 36
7
7 4
+
3 3
=
33 12
7
+
3
=
11 4
8
3 3
+
2 2
=
12 6
3
+
2
=
2
9
2 2
+
5 5
=
20 10
2
+
5
=
2
10
6 5
+
9 6
=
81 30
6
+
9
=
27 10
11
9 6
+
5 4
=
33 12
9
+
5
=
11 4
12
5 4
+
1 3
=
19 12
13
1 3
+
3 7
=
16 21
14
3 7
+
2 8
=
38 56
3
+
2
=
19 28
15
2 8
+
7 4
=
16 8
2
+
7
=
2