a) 11/24-5/41+13/24+0,5-36/41 b)-12 / (3/4-5/6)^2 c)7/27*[(-8/6)-45/18]

Đáp án+Giải thích các bước giải:

`a,11/24-5/41+13/24+0,5-36/41`

`=11/24+13/24-5/41-36/41+0,5`

`=1-1+0,5`

`=0,5`

`b,-12/(3/4-5/6)^2`

`=-12/(-1/12)^2`

`=-12/(1/144)`

`=-1728`

`c,7/27×(-8/6-45/18)`

`=7/27×(-4/3-5/2)`

`=7/27×(-23)/6`

`=-161/162`