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84 mg: 2-21 mg :3 = 84 hg: 4+63 hg : 3+ 42 hg : 2 = 4372 cg + 578 cg + 521 cg - 1999 cg = 63 kg:3x4x6 - 499 kg =​

Răspuns :

Răspuns:

84 mg: 2-21 mg :3 = 42-7=35mg

84 hg: 4+63 hg : 3+ 42 hg : 2 =21+21+21=63hg

4372 cg + 578 cg + 521 cg - 1999 cg =

5471-1999=3472cg

63 kg:3x4x6 - 499 kg =

21x4x6-499=

84x6-499=

504-499=5 kg