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- 3h - 2h + 6h + 9 = h + 9
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When h=10, 2h-9 = 2(10)-9 = 20-9 = 11 .
That is 27 x 9 = 243
189
The sum of 27 occurrences of the number 9 is calculated by multiplying 27 by 9, resulting in 243.
9+9+9+9+9+9+9=63