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Addition/Subtraction Inverse Operations
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| A | B |
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| 62 - 41 = 21 | 21 + 41 = 62 |
| 19 - 11 = 8 | 8 + 11 = 19 |
| 37 - 9 = 28 | 28 + 9 = 37 |
| 20 - 7 = 13 | 13 + 7 = 20 |
| 45 - 6 = 39 | 39 + 6 = 45 |
| 54 - 14 = 40 | 40 + 14 = 54 |
| 25 - 4 = 21 | 21 + 4 = 25 |
| 78 - 12 = 66 | 66 + 12 = 78 |
| 31 - 10 = 21 | 21 + 10 = 31 |
| 48 - 13 = 35 | 35 + 13 = 48 |
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