2. Dê o nome da propriedade aplicada em cada item. cen a) 7 x 7 = 49 b) 2x9=9x2=18 c) (8 x 5) x 4 = 8 x (5 x 4) d) 1 x 23 = 23 x 1 = 23 e) 8x (4-2) = 8x4-8x2​
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