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분수: 분모가 다른 덧셈2분수4

1
4 7
+
1 3
=
19 21
2
1 3
+
9 6
=
11 6
3
9 6
+
2 3
=
13 6
4
3 5
+
1 4
=
17 20
5
1 5
+
3 3
=
18 15
1
+
3
=
6 5
6
3 3
+
1 8
=
27 24
3
+
1
=
9 8
7
1 8
+
2 4
=
5 8
8
2 4
+
5 2
=
12 4
2
+
5
=
3
9
5 2
+
4 7
=
43 14
10
4 7
+
3 5
=
41 35
11
3 5
+
9 2
=
51 10
12
2 6
+
1 3
=
4 6
2
+
1
=
2 3
13
1 3
+
6 2
=
20 6
1
+
6
=
10 3
14
6 2
+
9 8
=
33 8
15
8 9
+
4 5
=
76 45