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뺄셈 2자리 - 1자리

		2	7
			2
		2	5

		5	7
			5
		5	2

		2	3
			6
		1	7

		2	2
			2
		2	0

		2	5
			2
		2	3

		5	0
			4
		4	6

		3	7
			9
		2	8

		1	5
			5
		1	0

		1	7
			5
		1	2

		5	2
			9
		4	3

		4	5
			7
		3	8

		5	1
			9
		4	2

		6	1
			4
		5	7

		2	9
			9
		2	0

		3	4
			4
		3	0