Ta có: \(-418-\left\{-418-\left[-418-\left(418+2003\right)\right]\right\}\)

\(=-418-\left\{-418-\left[-418-418-2003\right]\right\}\)

\(=-418-\left\{-418+418+418+2003\right\}\)

\(=-418-\left\{418+2003\right\}\)

\(=-418-418-2003\)

\(=-2839\)

-418 - { -418 - [ -418 - ( -418 + 2003 ) ] }

= -418 - [ -418 - ( -418 + 418 - 2003 ) ]

= -418 - [ -418 - ( -2003 ) ]

= -418 - ( -418 + 2003 )

= -418 + 418 - 2003

= 0 - 2003

= -2003.

-418-{-418-[-418-(-418+2003)]}=-418+418+[-418-(-418+2003)]=-418-(-418+2003)=-418+418-2003=-2003

b, -418 - {- 418 - [ -418 - (-418) + 2021]}

= -481 - { -418  - [ 0 + 2021]}

= -481 + 418 + 2021

= 2021 

d, 23 - 501 - 343 + 61 - 257 + 16 - 499

=  (23 + 61 + 16) - (501 + 499) - (343 + 257)

= 100 - 1000 - 600

= 100 - 1600

= -1500 

e, 743 - 231 + (-495) - (-69) - 38 + (-117)

= 512 - 426 - 155

= 86 - 155

= - 69 

giúp mình với

Cho mình xin đề bài ạ1

\(-418-\left\{-218-\left[-118-\left(-131\right)\right]+2017\right\}\)

\(=-418-\left\{-218-\left[-118+131\right]+2017\right\}\)

\(=-418-\left\{-218-13+2017\right\}\)

\(=-418-\left\{-231+2017\right\}\)

\(=-418-1786=-2204\)

A = (15-17) - |-3| - [ (-2).3 - (-3)² ]

A = (-2) - 3 - [ (-6) - 9 ]

A = (-5) - (-15)

A = (-5) + 15

A = 10

B = 418 + [ 418 - (418+2018) ]

B = 418 + [ 418 - 2436 ]

B = 418 + (-2018)

B = -1600

Chúc bạn học tốt!

1600 nha 

chúc học giỏi !!!