Giúp mình nhanh vouwa ai nhanh nhất thì 5sao và tlhn

Đáp án:

 đáp án trong ảnh ko hiểu chỗ nào thì hỏi nka

Đáp án:

Giải thích các bước giải:

 `5)`

`(3-1/4+2/3)-(5-1/3-6/5)+(6-7/4+3/2)`

`=` `3-1/4+2/3-5+1/3+6/5+6-7/4+3/2`

`=` `(3-5+6)+(-1/4-7/4)+(2/3+1/3)+3/2+6/5`

`=` `4-8/4+3/3+3/2+6/5`

`=` `4-2+1+3/2+6/5`

`=` `3+3/2+6/5`

`=` `9/2+6/5`

`=` `57/10`

`6)`

`(6-2/3+1/2)+(5+5/3-3/2)-(3-7/3+5/2)`

`=` `6-2/3+1/2+5+5/3-3/2-3+7/3-5/2`

`=` `(6+5-3)+(-2/3+5/3+7/3)+(1/2-3/2-5/2)`

`=` `8+10/3-7/2`

`=` `47/6`

`7)`

`(5/3-3/7+9)-(2+5/7-2/3)+(8/7-4/7-10)`

`=` `5/3-3/7+9-2-5/7+2/3+8/7-4/7-10`

`=` `(-2-10+9)+(-3/7-5/7+8/7-4/7)+(5/3+2/3)`

`=` `-3-4/7+7/3`

`=` `100/21`

`8)`

`(8-9/4+2/7)-(-6-3/7+5/4)-(3+2/4-9/7)`

`=` `8-9/4+2/7+6+3/7-5/4-3-2/4+9/7`

`=` `(8+6-3)+(-9/4-5/4-2/4)+(2/7+3/7+9/7)`

`=` `11-16/4+14/7`

`=` `11-4+2`

`=` `9`