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분수: 분모가 다른 덧셈2분수4

1
2 4
+
9 2
=
20 4
2
+
9
=
5
2
6 2
+
2 4
=
14 4
6
+
2
=
7 2
3
1 4
+
3 3
=
15 12
1
+
3
=
5 4
4
1 3
+
2 6
=
4 6
1
+
2
=
2 3
5
2 6
+
3 9
=
12 18
2
+
3
=
2 3
6
3 9
+
5 7
=
66 63
3
+
5
=
22 21
7
7 5
+
1 9
=
68 45
8
9 5
+
1 4
=
41 20
9
1 4
+
3 5
=
17 20
10
2 5
+
9 7
=
59 35
11
7 5
+
1 4
=
33 20
12
1 4
+
8 6
=
19 12
13
8 6
+
5 3
=
18 6
8
+
5
=
3
14
3 6
+
1 8
=
15 24
3
+
1
=
5 8
15
1 2
+
4 4
=
6 4
1
+
4
=
3 2