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o familie consuma dimineata unu pe doi de paine ,la pranz o paine si jumatate,iar seara o paine .Aflati cate paini consuma familia intr o saptamana

Răspuns :

1\2 dimineata 1|2 LA PRANZ 1\1 SEARA     1\2+1\2+1\1=3\5  7\7-3\5=\42 (??)