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뺄셈 2자리 - 1자리

		1	2
			3
			9

		2	4
			4
		2	0

		2	1
			4
		1	7

		7	6
			2
		7	4

		3	5
			2
		3	3

		4	6
			6
		4	0

		2	9
			2
		2	7

		6	2
			2
		6	0

		3	5
			2
		3	3

		1	3
			2
		1	1

		1	7
			5
		1	2

		4	1
			1
		4	0

		2	9
			3
		2	6

		2	9
			9
		2	0

		5	5
			2
		5	3