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분수: 분모가 다른 덧셈2분수2

1
1 2
+
3 7
=
13 14
2
3 7
+
5 4
=
47 28
3
5 4
+
2 2
=
9 4
4
2 2
+
8 8
=
16 8
2
+
8
=
2
5
8 8
+
5 7
=
96 56
8
+
5
=
12 7
6
5 7
+
1 4
=
27 28
7
1 4
+
4 8
=
6 8
1
+
4
=
3 4
8
1 4
+
2 9
=
17 36
9
2 9
+
4 3
=
14 9
10
8 3
+
6 5
=
58 15
11
6 5
+
1 6
=
41 30
12
7 6
+
6 7
=
85 42
13
6 7
+
7 5
=
79 35
14
5 7
+
4 2
=
38 14
5
+
4
=
19 7
15
2 8
+
1 9
=
26 72
2
+
1
=
13 36