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분수: 분모가 다른 덧셈2분수2

1
2 2
+
7 5
=
24 10
2
+
7
=
12 5
2
7 5
+
8 4
=
68 20
7
+
8
=
17 5
3
8 4
+
6 6
=
36 12
8
+
6
=
3
4
6 6
+
3 2
=
15 6
6
+
3
=
5 2
5
2 5
+
1 7
=
19 35
6
1 4
+
5 8
=
7 8
7
5 8
+
6 5
=
73 40
8
6 5
+
1 2
=
17 10
9
1 6
+
2 5
=
17 30
10
5 2
+
2 4
=
12 4
5
+
2
=
3
11
4 9
+
1 2
=
17 18
12
1 2
+
7 3
=
17 6
13
7 3
+
2 9
=
23 9
14
2 9
+
9 2
=
85 18
15
9 2
+
8 4
=
26 4
9
+
8
=
13 2