Question

Tính 1 cách hợp lí ko ra đáp án liền phải giải thích

4/11 . 7/13 + 4/11 : 13/6 - 26/11 = 

Answer 1

\(\dfrac{4}{11}.\dfrac{7}{13}+\dfrac{4}{11}:\dfrac{13}{6}-\dfrac{26}{11}=\dfrac{4}{11}.\dfrac{7}{13}+\dfrac{4}{11}.\dfrac{6}{13}-\dfrac{26}{11}\)

\(=\dfrac{4}{11}.\left(\dfrac{7}{13}+\dfrac{6}{13}\right)-\dfrac{26}{11}\)

\(=\dfrac{4}{11}-\dfrac{26}{11}\)

\(=-\dfrac{22}{11}\)

\(=-2\)

Answer 2

`4/11 . 7/13 + 4/11 : 13/6 - 26/11 `

`= 4/11 . 7/13 + 4/11 xx 6/13 - 26/11 `

`= 4/11 . ( 7/13+6/13)-26/11`

`= 4/11. 1-26/11`

`= 4/11 - 26/11`

`=-22/11=-2`