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Copiati si completati tabelul: [(clasa 6 manual pag. 53) dau coronita]

a....-10.....5.....-17.....0....-8......-20....-13
b....12......-7.....17......-3......-4.....19....-10
a+b......?.....?.....?......?.......?.......?........?


AJUUUUUUUUUUUUUUUUUUUTOOOOOOOOOOOOOOOOOOOOOOOOR!!!!!!!