Question

1. Calcule o valor das expressões:
a. 5.32 – 42 =
b. 749 + 23 – 1 =
c. (72 – 1) = 3 + 2.5 =
​

Answer 1

a) 5.32–42

160–42

118

b)749+23–1

772–1

771

c)(72–1)=3+2.5

71=3+10

71=13

d)142+[(26–170.03–1).23]