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분수: 분모가 다른 덧셈2분수4

1
2 4
+
4 8
=
8 8
2
+
4
=
1
2
1 2
+
3 7
=
13 14
3
3 7
+
1 3
=
16 21
4
1 3
+
9 6
=
11 6
5
9 6
+
2 8
=
42 24
9
+
2
=
7 4
6
2 8
+
4 3
=
38 24
2
+
4
=
19 12
7
4 3
+
2 2
=
14 6
4
+
2
=
7 3
8
2 2
+
1 5
=
12 10
2
+
1
=
6 5
9
1 5
+
6 3
=
33 15
1
+
6
=
11 5
10
7 3
+
5 6
=
19 6
11
6 4
+
1 2
=
8 4
6
+
1
=
2
12
1 2
+
3 9
=
15 18
1
+
3
=
5 6
13
3 9
+
5 3
=
18 9
3
+
5
=
2
14
2 3
+
8 6
=
12 6
2
+
8
=
2
15
8 6
+
1 9
=
26 18
8
+
1
=
13 9