Question

Ét ô ét

Answer 1

`2/3 . 6/9+25/54:5/6`

`=2/3 . 2/3+25/54 . 6/5`

`=4/9+5/9=9/9=1`

Answer 2

\(\dfrac{2}{3}\cdot\dfrac{6}{9}+\dfrac{25}{54}:\dfrac{5}{6}=\dfrac{4}{9}+\dfrac{5}{9}=\dfrac{9}{9}=1\)