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뺄셈 2자리 - 1자리

		1	8
			3
		1	5

		2	3
			8
		1	5

		3	1
			9
		2	2

		2	1
			3
		1	8

		5	2
			3
		4	9

		2	9
			6
		2	3

		4	7
			1
		4	6

		2	0
			8
		1	2

		2	4
			1
		2	3

		2	1
			1
		2	0

		3	5
			9
		2	6

		4	0
			4
		3	6

		1	1
			5
			6

		1	3
			4
			9

		4	0
			1
		3	9