Question

1+1-1-1+2-3+1

Answer 1

1+1-1-1+2-3+1

= 0

Answer 2

=0

Answer 3

bằng 0 nha

 

Answer 4

1 + 1 - 1 - 1 + 2 - 3 + 1

= 2    -  1 - 1 + 2 - 3 + 1

=     1      - 1 + 2 - 3 + 1

=            0    + 2 - 3 + 1

=                2      - 3  + 1

=                   ( -1 )    + 1

=                         0

Answer 5

=1

 

Answer 6

1+1-1-1+2-3+1= 0

Answer 7

` 1 + 1 - 1 - 1 + 2 - 3 + 1 `

` = 2 - 1 - 1 + 2 - 3 + 1 `

` = 1 - 1 + 2 - 3 + 1 `

` = 0 + 2 - 3 + 1 `

` = 2 - 3 + 1 `

` = -1 + 1 `

` = 0 `

Đáp số: ` 0 `

Answer 8

`1+1-1-1+2-3+1`

`=2-1-1+2-3+1`

`=1-1+2-3+1`

`=0+2-3+1`

`=2-3+1`

`=(2+1)-3`

`=3-3`

`=0`