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1,3kg - x zł
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0,4x=4,44*1,3
0,4x=5,772 /:0,4
x=14,43zł
1.3kg-X
1.3kg*4.44zł=5.772zł=5.73zł
1,3:0,4=3,25
3,25*4,44=14,43
1,3kg ciastek kosztuje 14,53