Rút gọn các phân số sau: 36.85.20/25.84.34

2 câu trả lời

Đáp án:

`(36.85.20)/(25.84.34)`

`= (6.6.17.5.4.5)/(5.5.6.2.7.17.2)`

`= (6.6.17.4.5^2)/(7.6.17.4.5^2)`

`= 6/7`

$#dariana$

$\dfrac{36. 85. 20}{25. 84. 34}$

`=` $\dfrac{6. 6. 5. 17. 4. 5}{5. 5. 12. 7. 17. 2}$

`=` $\dfrac{6. 6. 17. 4. 5. 5}{12. 7. 17. 2. 5. 5}$

`=` $\dfrac{6. 6. 1. 2². 1}{12. 7. 1. 2. 1}$

`=` $\dfrac{6. 6. 2}{6. 2. 7. 2}$

`=` $\dfrac{1. 6. 2}{7. 2}$

`=` $\dfrac{6. 1}{7. 1}$

`=` $\dfrac{6}{7}$

$\text{#lknhatminh0322}$