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DAU COROANA!!!!!!!!!!
28,4:100+(16,8-(400:100-4)


Răspuns :

28,4:100+(16,8-(400:100-4))=2,84+(16,8-(4-4))=2,84+16,8=19,64

1)400:100=4
2)4-4=0
3)16,8-0=16,8
4)28,4:100=0,284
5)0,284+16,8=17,084