Giúp mink giải hai câu đầu nhé

Đáp án + Giải thích các bước giải:

  `(1/9 + 1/7 + 1/11)/(4/9 + 4/7 + 4/11) + (0,6 - 3/25 - 3/125 - 3/625)/(4/5 - 0,16 - 4/125 - 4/625)`

`= (1/9 + 1/7 + 1/11)/(4 * ( 1/9 + 1/7 + 1/11)) + (3/5 - 3/25 - 3/125 - 3/625)/(4/5 - 4/25 - 4/125 - 4/625)`

`= 1/4 + (3 * ( 1/5 + 1/25 + 1/125 + 1/625 ))/(4 * ( ( 1/5 + 1/25 + 1/125 + 1/625 ))`

`= 1/4 + 3/4`

`= 1`

`-----`

  `564 * ( (12 + 12/7 - 12/25 - 12/71)/(4 + 4/7 - 4/25 - 4/71) : (3 + 3/13 + 3/19 + 3/101)/(5 + 5/13 + 5/19 + 5/101)`

`= 564 * ( (12 * ( 1 + 1/7 - 1/25 - 1/71 ))/(4 * ( 1 + 1/7 - 1/25 - 1/71 )) : (3 * ( 1 + 1/13 + 1/19 + 1/101))/(5 * ( 1 + 1/13 + 1/19 + 1/101))`

`= 564 * ( 12/4 : 3/5 )`

`= 564 * ( 3 * 5/3 )`

`= 564 * 5`

`= 2820`