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분수: 분모 2자리 덧셈7분수2

1
7 21
+
4 21
=
11 21
2
4 44
+
3 44
=
7 44
3
3 47
+
7 47
=
10 47
4
7 48
+
5 48
=
12 48
7
+
5
=
1 4
5
5 99
+
1 99
=
6 99
5
+
1
=
2 33
6
1 72
+
6 72
=
7 72
7
6 38
+
5 38
=
11 38
8
5 52
+
2 52
=
7 52
9
2 44
+
3 44
=
5 44
10
3 72
+
5 72
=
8 72
3
+
5
=
1 9
11
5 36
+
7 36
=
12 36
5
+
7
=
1 3
12
7 45
+
4 45
=
11 45
13
4 64
+
2 64
=
6 64
4
+
2
=
3 32
14
2 13
+
8 13
=
10 13
15
8 43
+
4 43
=
12 43