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Solve the math problem.

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14













-  0

18













-  1

8

- 7













6 - 6 =













17 - 6 =













11













-  6

15













-  1

12 - 5 =

8 - 2 =

15













-  5

17 - 4 =













9

- 7













4 - 2 =













7 - 5 =













8 - 8 =













9

- 9













18 - 9 =













19













-  2

16













-  5

17 - 2 =













19

- 6













19

-  0

13 - 7 =













20

- 2













12 - 3 =













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