Question

1.resolva as espressoes

a)15+(26-12)-8 =
b)(22+4)-17+5 =
c)(9+8)+(16-9 =
d)25+[12+(8-5)+2] =
e){[(50-20)-30]+20}+10 =

Answer 1

a) 15 + (14) - 8

= 29 - 8

= 21

~~~

b) (26) - 17 + 5

= 9 + 5

= 14

~~~

c) (17) + (7)

= 17 + 7

= 24

~~~

d) 25 + [12 + (3) + 2]

= 25 + [17]

= 25 + 17

= 42

~~~

e){[(30) - 30] + 20} + 10

= {0 + 20} + 10

= 20 + 10

= 30

Espero ter ajudado