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a) 10,6-4 2/3+16 1/15=10 6/10-4 2/3+16 1/15=10 18/30-4 20/30+16 1/15=9 48/30-4 20/30+16 1/15=5 28/30+16 1/15=5 420/450+16 30/450=21 450/450=22
c) 7,13 : 2,75-1 3/5=7,13 : 2,75-1,6=7,13 : 1,15=6,2
Proszę.:-) W razie problemów, pisz do mnie na skrzynkę.:-)