Đáp án:

Giải thích các bước giải:

`g,` `-5/7 . 3/13` `- 5/7 .` `10/13 + 1``5/7`

`=` `-5/7 . (``3/13 + 10/13``) + 12/7`

`= -5/7 .` `13/13 + 12/7`

`= -5/7 .` `1 + 12/7`

`=` `-5/7 + 12/7`

`= 7/7`

`= 1`

`h,`` 7/4 . 29/5` `- 7/4 .` `9/5 + 3``2/13`

`=`` 7/4 . 29/5` `+ 7/4 .` `(-9)/5 + 41/13`

`=` `7/4 . (``29/5 - 9/5``) + 41/13`

`= 7/4 .` `20/5 + 41/13`

`= 7/4 .` `4 + 41/13`

`=` `7 + 41/13`

`=`` 91/13 + 41/13`

`= 132/13`