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분수: 분모가 다른 덧셈2분수3

1
3 3
+
1 4
=
15 12
3
+
1
=
5 4
2
1 5
+
6 3
=
33 15
1
+
6
=
11 5
3
6 3
+
2 9
=
20 9
4
9 8
+
1 4
=
11 8
5
1 4
+
7 5
=
33 20
6
7 5
+
9 4
=
73 20
7
4 5
+
1 8
=
37 40
8
1 8
+
2 6
=
11 24
9
6 6
+
1 5
=
36 30
6
+
1
=
6 5
10
1 5
+
2 3
=
13 15
11
7 3
+
2 8
=
62 24
7
+
2
=
31 12
12
9 2
+
1 7
=
65 14
13
1 7
+
2 6
=
20 42
1
+
2
=
10 21
14
6 9
+
1 4
=
33 36
6
+
1
=
11 12
15
1 4
+
9 5
=
41 20