Question

6/7 x 5/14 + 6/7 : 1 và 5/9 (1 và 5/9 là hỗn số nha)

Answer 1

`6/7 xx 5/14 + 6/7 : 1 5/9`

`= 6/7 xx 5/14 + 6/7 : 14/9`

`= 6/7 xx 5/14 + 6/7 xx 9/14`

`= 6/7 xx ( 5/14 + 9/14)`

`= 6/7 xx 14/14`

`= 6/7 xx 1 = 6/7`

 

Answer 2

\(\dfrac{6}{7}\times\dfrac{5}{14}+\dfrac{6}{7}:1\dfrac{5}{9}\)

\(=\dfrac{6}{7}\times\dfrac{5}{14}+\dfrac{6}{7}:\dfrac{14}{9}=\dfrac{6}{7}\times\dfrac{5}{14}+\dfrac{6}{7}\times\dfrac{9}{14}\)

\(=\dfrac{6}{7}\times\left(\dfrac{5}{14}+\dfrac{9}{14}\right)=\dfrac{6}{7}\times1=\dfrac{6}{7}\)