Mình dùng acc khác vì acc kia thiếu điểm ạ

Đáp án + Giải thích các bước giải:

`f) 2345 - 1000 : [19-2(21-18)²]`

`=2345 - 1000 :  [19-2.3²]`

`=2345 - 1000 : [19-2.9]`

`=2345 - 1000 : [19-18]`

`=2345 - 1000 : 1`

`=2345-1000`

`=1345`

`g)128-[68+8(37-35)²]:4`

`=128-[68+8.2²]:4`

`=128-[68+32]:4`

`=128-100:4`

`=128-25`

`=103`

`h)568-{5[143-(4-1)²]+10}:10`

`=568-{5[143-3²]+10}:10`

`=568-{5.134+10}:10`

`=568-{670+10}:10`

`=568-680:10`

`=568-68`

`=500` 

`i)107-{38+[7.3²-24:6+(9-7)³]}:15`

`=107-{38+[7.9-24:6+8]}:15`

`=107-{38+[63-4+8]}:15`

`=107-{38+67}:15`

`=107-105:15`

`=107-7`

`=100`

`k)307-[(180-160):2²+9]:2`

`=307-[20:4+9]:2`

`=307-[5+9]:2`

`=307-14:2`

`=307-7`

`=300`

`l)205-[1200-(4²-2.3)³]:40`

`=205-[1200-(16-6)³]:40`

`=205-[1200-10³]:40`

`=205-[1200-1000]:40`

`=205-200:40`

`=205-5`

`=200`