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2014-09-05T15:56:04+03:00
/prima data transformam   19/150 in 38/300-13/300=25/300 dupa 3/50 in 18/300 25/300-18/300=7/300 dupa 21 in 6300/300= 7/300*6300/300=4410 dupa 83/4 in 6225/300-4410/300=1815 doar atat stiu


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