Chimie, întrebare adresată de Angela20071, 8 ani în urmă

Va rog cat mai REPEDE

Anexe:

Răspunsuri la întrebare

Răspuns de Pokju8888
1
5.a+b+c=94                                                                                                                       a+b=75                                                                                                                                 c=b-7                                                                                                                       75+c=94                                                                                                                    c=94-75                                                                                                                            c=19                                                                                                                                  c=b-7                                                                                                                             19=b-7                                                                                                                              b=19+7                                                                                                             b=26                                                                                                               a+b=75                                                                                                       a+26=75                                                                                                                   a=75-26                                                                                                                            a=49
6.190x35=6650 litri in cele 35 butoaie                                          6650:5x2=1330x2=2660 litri  s-au vandut in prima zi                                                                                                                            6650-2660=3990 litri au ramas                                                                                3990:3=1330 litri pentru o firma

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