27289347474747484920102-2828393930339392939393929

To solve the given arithmetic expression, we can follow these steps:

Step 1: Perform subtraction from right to left.

10 - 9 = 1 29 - 29 = 0 939 - 939 = 0 93 - 93 = 0 393 - 393 = 0 30 - 30 = 0 839 - 839 = 0 2828 - 2828 = 0 47474 - 47474 = 0 747474 - 747474 = 0

Step 2: Sum up the results of the subtraction:

0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 1 = 1

Therefore, the result of the given arithmetic expression is 1.