Question

[Ｚιήⓝ ✌ Ħc ĎốＴ 💦]

Tính HỢP LÍ:

a) -67.(1 - 301) - 301 .67

b) ( - 3879 - 3879 - 3879 -3879) . (-25)

2:15  

Answer 1

[chuche]

`a)-67.(1-301)-301.67`

`=67.(-1).(-300)-301.67`

`=67.300-301.67`

`=67.(300-301)`

`=67.(-1)`

`=-67`

__

`b)(-3879-3879-3879-3879).(-25)`

`=3879.(-4).(-25)`

`=3879.100`

`=387900`

Answer 2

[Phan Văn Toàn]

$a)-67.(1-301)-301.67$

$=67.[-(1-301)-301]$

$=67.(-1+301-301)$

$=67.(-1)$

$=-67$

$b)(-3879-3879-3879-3879).(-25)$

$=3879.(-4).(-25)$

$=3879.100$

$=387900$

$\mathrm{ttiticticktick\; hhohôhộhộ\; tớ}$