Question

[Trần Đình Dủng]

Tính

\(\frac{2181.729+234.81.27}{3^2.9^2.234+18.54.162.9+723.729}\)

Answer 1

[Nguyễn Thị Thùy Trâm]

\(\frac{\text{2181 . 729 + 234 . 81 . 27}}{\text{ 3^2. 9^2. 234 + 18 . 54 . 162 . 9 + 723 . 729}}\)

= \(\frac{\text{2181 . 729 + 234 . 3 . 81 . 9 }}{\text{ 9 . 81 . 234 + 18 . 54 . 2 . 81 . 9 + 723 . 729 }}\)

= \(\frac{\text{2181 . 729 + 702 . 729 }}{\text{ 729 . 234 + 1944 . 729 + 723 . 729 }}\)

= \(\frac{\text{729 . (2181 + 702) }}{\text{ 729 . (234 + 1944 + 723) }}\)

= \(\frac{\text{729 . 2883 }}{\text{ 729 . 2901 }}\)

= \(\frac{2883}{2901}\)

= \(\frac{961}{967}\)

Answer 2

[Trần Đình Dủng]

cảm ơn