11 plus 5-10 plus 20-9 plus 14-10 is equal to 21
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21 times 9 plus 6 is equal to 195.
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No you can not prove that 9 +10 = 21.
1 plus negative 10 is equal to -9.
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9+10 =21 is sated from a popular vine
48 plus 22 plus 10 plus 10 plus 9 plus 1 is equal to 100.
12 + 9 = 21. 21/10 =2 and 1/10 (21 divided by 10).
Yes, since 10-1 = 9
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