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뺄셈 2자리 - 1자리

		2	2
			2
		2	0

		3	4
			3
		3	1

		3	7
			7
		3	0

		3	2
			3
		2	9

		6	2
			1
		6	1

		3	7
			7
		3	0

		2	9
			6
		2	3

		3	6
			7
		2	9

		3	2
			9
		2	3

		2	1
			6
		1	5

		3	0
			5
		2	5

		3	5
			1
		3	4

		2	5
			5
		2	0

		3	4
			4
		3	0

		4	0
			3
		3	7