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Solve the math problem.

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12 - 5 =

19













-  2

6 - 6 =













9

- 9













19

-  0

18













-  1

12 - 3 =













15













-  1

17 - 2 =













15













-  5

9

- 7













20

- 2













11













-  6

16













-  5

8

- 7













7 - 5 =













8 - 8 =













14













-  0

8 - 2 =

13 - 7 =













18 - 9 =













17 - 6 =













4 - 2 =













17 - 4 =













19

- 6













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