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뺄셈 2자리 - 1자리

		2	7
			4
		2	3

		9	9
			2
		9	7

		2	9
			4
		2	5

		6	1
			5
		5	6

		9	2
			2
		9	0

		2	8
			5
		2	3

		4	5
			5
		4	0

		5	6
			1
		5	5

		2	2
			9
		1	3

		2	8
			3
		2	5

		1	3
			1
		1	2

		2	0
			5
		1	5

		9	9
			2
		9	7

		3	6
			5
		3	1

		2	3
			3
		2	0