Select after number and drag it.
9 - 2 =
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21 - 7 =
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30 - 2 =
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8 +20 - 5 =
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13 + 3 - 5 =
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73 + 3 - 9 =
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18 + 5 - 7 =
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19 + 23 - 12 =
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9 - 4 =
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19 + 3 - 10 =
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Score : /