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뺄셈 3자리 - 1자리

2	7	1
		1
2	7	0

5	8	5
		3
5	8	2

2	2	8
		2
2	2	6

1	1	7
		1
1	1	6

6	2	2
		1
6	2	1

9	8	9
		6
9	8	3

1	2	2
		5
1	1	7

8	8	1
		9
8	7	2

2	2	7
		6
2	2	1

1	2	9
		6
1	2	3

6	1	2
		9
6	0	3

3	2	5
		8
3	1	7

1	2	2
		2
1	2	0

3	1	1
		7
3	0	4

3	8	4
		5
3	7	9