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분수: 분모가 다른 덧셈2분수4

1
1 7
+
4 5
=
33 35
2
4 5
+
6 3
=
42 15
4
+
6
=
14 5
3
3 7
+
1 2
=
13 14
4
1 2
+
6 3
=
15 6
1
+
6
=
5 2
5
6 3
+
5 2
=
27 6
6
+
5
=
9 2
6
5 2
+
6 6
=
21 6
5
+
6
=
7 2
7
6 6
+
1 7
=
48 42
6
+
1
=
8 7
8
1 5
+
4 9
=
29 45
9
4 9
+
7 2
=
71 18
10
7 2
+
2 4
=
16 4
7
+
2
=
4
11
2 4
+
1 8
=
5 8
12
1 8
+
9 2
=
37 8
13
9 2
+
4 4
=
22 4
9
+
4
=
11 2
14
7 4
+
5 6
=
31 12
15
5 6
+
7 2
=
26 6
5
+
7
=
13 3