3c+4p=2,267, 4p=2,267=3c introducem in ecuatia a doua 4c+4p=2,372, 4c+2,267-3c=2,372, c=2,372-2,267=0,105 kg 4p=2,267-3*0,105=2,267-0,315=1,952 p=1,952/4=0,488 kg
3c+4p=2,267 4c+4p=2,372 si le scadem ----------------------- 4c-3c =2,372-2,267 c=0,105 kg = 105 g cantareste un covrig 4c+4p=2,372 l :4 c+p=0,593 p=0,593 - 0,105 = 0,488 g.
