Resposta :
Resposta:
b) 25 - ( 15 +6:3) = (R: 8
25 -(15+2)
25-17
=8
c) 25 +[7 + ( 8 - 4:2)] =
25 +[7 + ( 8 - 2)] =
25 +[7 + 6] =
25 +13 =
=38
Resposta:
b) 25 - ( 15 +6:3) = (R: 8
25 -(15+2)
25-17
c) 25 +[7 + ( 8 - 4:2)] =
25 +[7 + ( 8 - 2)] =
25 +[7 + 6] =
25 +13 =