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분수: 분모가 다른 덧셈2분수7

1
2 7
+
5 5
=
45 35
2
+
5
=
9 7
2
5 5
+
9 8
=
85 40
5
+
9
=
17 8
3
9 8
+
1 6
=
31 24
4
1 6
+
3 4
=
11 12
5
3 4
+
4 5
=
31 20
6
5 4
+
8 5
=
57 20
7
8 5
+
7 2
=
51 10
8
7 2
+
3 6
=
24 6
7
+
3
=
4
9
3 6
+
1 7
=
27 42
3
+
1
=
9 14
10
1 7
+
2 6
=
20 42
1
+
2
=
10 21
11
6 7
+
1 9
=
61 63
12
1 9
+
7 2
=
65 18
13
4 2
+
2 7
=
32 14
4
+
2
=
16 7
14
2 7
+
4 2
=
32 14
2
+
4
=
16 7
15
1 2
+
3 9
=
15 18
1
+
3
=
5 6