Stor (34 20 + 27 + 21 + 29+19)

Step 2: 34 - 25 = 9 20-25=-5

27 - 25 = 2 21 - 25 = - 4

29 - 25 = 4 19 - 25 = - 6

Step 3: 9 + (-5) + 2 + (-4) + 4 + (-6) = 0

Step 4:

O = 0

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