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분수: 분모가 다른 덧셈2분수0

1
4 4
+
7 7
=
56 28
4
+
7
=
2
2
7 7
+
3 3
=
42 21
7
+
3
=
2
3
7 3
+
5 6
=
19 6
4
5 6
+
2 5
=
37 30
5
2 5
+
5 3
=
31 15
6
5 3
+
8 4
=
44 12
5
+
8
=
11 3
7
2 4
+
4 7
=
30 28
2
+
4
=
15 14
8
4 7
+
1 2
=
15 14
9
9 2
+
8 6
=
35 6
10
8 6
+
1 9
=
26 18
8
+
1
=
13 9
11
1 9
+
8 4
=
76 36
1
+
8
=
19 9
12
8 4
+
1 9
=
76 36
8
+
1
=
19 9
13
9 2
+
1 6
=
28 6
9
+
1
=
14 3
14
1 6
+
2 5
=
17 30
15
5 5
+
7 7
=
70 35
5
+
7
=
2