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분수: 분모 2자리 덧셈4분수4

1
4 42
+
5 42
=
9 42
4
+
5
=
3 14
2
5 13
+
8 13
=
13 13
5
+
8
=
1 1
3
8 20
+
4 20
=
12 20
8
+
4
=
3 5
4
4 56
+
2 56
=
6 56
4
+
2
=
3 28
5
2 20
+
7 20
=
9 20
6
7 31
+
4 31
=
11 31
7
4 41
+
3 41
=
7 41
8
3 37
+
7 37
=
10 37
9
7 84
+
9 84
=
16 84
7
+
9
=
4 21
10
9 21
+
5 21
=
14 21
9
+
5
=
2 3
11
5 76
+
1 76
=
6 76
5
+
1
=
3 38
12
1 44
+
8 44
=
9 44
13
8 16
+
9 16
=
17 16
14
9 30
+
2 30
=
11 30
15
2 93
+
4 93
=
6 93
2
+
4
=
2 31