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`
$#dariana$
$\dfrac{36. 85. 20}{25. 84. 34}$
`=` $\dfrac{6. 6. 5. 17. 4. 5}{5. 5. 12. 7. 17. 2}$
`=` $\dfrac{6. 6. 17. 4. 5. 5}{12. 7. 17. 2. 5. 5}$
`=` $\dfrac{6. 6. 1. 2². 1}{12. 7. 1. 2. 1}$
`=` $\dfrac{6. 6. 2}{6. 2. 7. 2}$
`=` $\dfrac{1. 6. 2}{7. 2}$
`=` $\dfrac{6. 1}{7. 1}$
`=` $\dfrac{6}{7}$
$\text{#lknhatminh0322}$