Question

Calcule o valor das expressões :
a) 35 - (20-1-3) =
b) 8 + 7 - 6 -3 -3 + 1 =
c) 45 -21 - 4 - 7 =
d) 35 - [ 20 +(8-5)]=
e) 120 +[( 20 + 40 + 60 ) - ( 35 + 12 + 23 ) ] =​

Answer 1

Resposta:

a)19  b)4  c)13  d)12  e)170

Explicação passo-a-passo:

a) =35−(19−3)=

=35−(16)=

=19

b)=15−6−3−3+1=

=9−3−3+1=

=6−3+1=

=3+1=

=4

c)=24−4−7=

=20−7=

=13

d)=35−[20+(3)]=

=35−[23]=

=12

e) =120+[(60+60)−(47+23)]=

=120+[(120)−(70)]=

=120+[50]=

=170