Question

1 efetuei as expressões

Answer 1

a) 5(4.2.2)+6-2.3
5(16)+6-6
80

b) 4.(11-3.3)+2.5-7
4(11-9)10-7
4(2)3
8+3
11

c)21-[3.(16-3.3)]+1
21-[3.(16-9)]+1
21-[3.7]+1
21-[21]+1
21-21+1
+1