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뺄셈 2자리 - 1자리

		3	2
			9
		2	3

		9	0
			2
		8	8

		2	7
			3
		2	4

		4	6
			2
		4	4

		5	6
			2
		5	4

		4	5
			3
		4	2

		9	5
			5
		9	0

		6	5
			5
		6	0

		2	5
			1
		2	4

		8	5
			8
		7	7

		2	6
			6
		2	0

		2	2
			1
		2	1

		4	3
			2
		4	1

		3	2
			1
		3	1

		1	9
			9
		1	0