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QR Challenge: Math Subtraction

Question	Answer
22-0=	22
28-20=	8
32-30=	2
2-1=	1
19-6=	13
27-26=	1
25-6=	19
34-9=	25
47-33=	14
7-3=	4
11-0=	11
48-21=	27
45-25=	20
37-3=	34
9-5=	4