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분수: 분모 2자리 덧셈3분수5

1
3 55
+
7 55
=
10 55
3
+
7
=
2 11
2
7 57
+
5 57
=
12 57
7
+
5
=
4 19
3
5 19
+
4 19
=
9 19
4
4 90
+
3 90
=
7 90
5
3 23
+
4 23
=
7 23
6
4 12
+
8 12
=
12 12
4
+
8
=
1 1
7
3 78
+
5 78
=
8 78
3
+
5
=
4 39
8
5 71
+
4 71
=
9 71
9
4 56
+
6 56
=
10 56
4
+
6
=
5 28
10
6 22
+
1 22
=
7 22
11
5 81
+
4 81
=
9 81
5
+
4
=
1 9
12
2 14
+
3 14
=
5 14
13
3 30
+
4 30
=
7 30
14
4 64
+
1 64
=
5 64
15
1 74
+
2 74
=
3 74