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분수: 분모가 다른 덧셈2분수2

1
2 2
+
3 7
=
20 14
2
+
3
=
10 7
2
7 4
+
1 7
=
53 28
3
1 7
+
9 2
=
65 14
4
2 9
+
6 4
=
62 36
2
+
6
=
31 18
5
6 4
+
2 5
=
38 20
6
+
2
=
19 10
6
2 5
+
3 8
=
31 40
7
1 6
+
2 4
=
8 12
1
+
2
=
2 3
8
2 4
+
8 7
=
46 28
2
+
8
=
23 14
9
8 7
+
7 6
=
97 42
10
7 6
+
3 2
=
16 6
7
+
3
=
8 3
11
2 4
+
1 9
=
22 36
2
+
1
=
11 18
12
1 9
+
7 4
=
67 36
13
7 4
+
4 5
=
51 20
14
4 5
+
8 9
=
76 45
15
8 9
+
2 5
=
58 45