•Copie e classifique cada sentenças como aberta ou fechada

A= 7 - 2 = 5

B= y + 4 = 7

C= 2 . 5 = 10

D= 3/5 = 9/19

E= (3+1) = 16

F= 3× +2y = 15

G= 2 : 4 - 1= 7

H= 2/5 + 1/3 = 4/15


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