Respostas
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a) 5/10 . (-14/10 + 21/10)
5/10 . (7/10)= 35/100= 7/20
b) 16/32 - 28/32+ 5/32=-12+5/32 -7/32
c)(36/16 +56/16) + [-300/16 -56/16]
35+56/16 - 356/16= -265/16
5/10 . (7/10)= 35/100= 7/20
b) 16/32 - 28/32+ 5/32=-12+5/32 -7/32
c)(36/16 +56/16) + [-300/16 -56/16]
35+56/16 - 356/16= -265/16
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