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70+…=77
7
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70+…=78
8
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12=10+…
2
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48=8+…
40
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59=9+…
50
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30+…=39
9
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60+…=63
3
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17=…+7
10
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46=…+40
6
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…=0+60
60
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55=50+…
5
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…=20+0
20
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64=…+60
4
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100=…+100
0
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