3 1/20 - 0,3 = 61/20 - 3/10 = 61/20 - 6/20 = 55/20 = 2 15/20 = 2 3/4 = 2,75
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3 1/20 - 0,3 = 61/20 - 3/10 = 61/20 - 6/20 = 55/20 = 2 15/20 = 2 3/4 = 2,75