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분수: 분모가 다른 덧셈3분수7

1
7 3
+
6 9
=
27 9
7
+
6
=
3
2
6 9
+
1 3
=
9 9
6
+
1
=
1
3
1 8
+
5 5
=
45 40
1
+
5
=
9 8
4
5 5
+
7 3
=
50 15
5
+
7
=
10 3
5
7 3
+
2 8
=
62 24
7
+
2
=
31 12
6
2 8
+
3 7
=
38 56
2
+
3
=
19 28
7
3 7
+
9 4
=
75 28
8
9 4
+
8 7
=
95 28
9
7 3
+
1 2
=
17 6
10
1 2
+
3 8
=
7 8
11
8 3
+
9 4
=
59 12
12
9 4
+
5 9
=
101 36
13
5 9
+
7 2
=
73 18
14
2 7
+
1 5
=
17 35
15
1 5
+
8 7
=
47 35