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분수: 분모가 다른 덧셈3분수7

1
7 5
+
1 4
=
33 20
2
1 4
+
3 3
=
15 12
1
+
3
=
5 4
3
3 3
+
9 6
=
15 6
3
+
9
=
5 2
4
3 6
+
1 2
=
6 6
3
+
1
=
1
5
4 2
+
6 6
=
18 6
4
+
6
=
3
6
6 6
+
1 9
=
20 18
6
+
1
=
10 9
7
1 9
+
2 4
=
22 36
1
+
2
=
11 18
8
2 4
+
7 5
=
38 20
2
+
7
=
19 10
9
5 7
+
4 4
=
48 28
5
+
4
=
12 7
10
6 4
+
5 7
=
62 28
6
+
5
=
31 14
11
5 7
+
1 2
=
17 14
12
1 3
+
8 5
=
29 15
13
8 5
+
6 6
=
78 30
8
+
6
=
13 5
14
6 6
+
3 5
=
48 30
6
+
3
=
8 5
15
5 6
+
1 3
=
7 6