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[(58×a-80):25]×64=1280​

Răspuns :

Răspuns:

(58×a-80):25=1280:64

(58×a-80):25=20

58×a-80=25×20

58×a-80=500

58×a=500-80

58×a=420

a=420:58

a=7 rest 4

coroana?