Question

25/7+(4/11 - 4/7)

Answer 1

4/11 sao trừ đc 4/7, số 4/7 lớn hơn 4/11 mà :v

Answer 2

25/7+(4/11 - 4/7)

= 25/7 + ( 28/77 - 44/77)

\(=\dfrac{25}{7}+\dfrac{-16}{77}\)

= \(\dfrac{275}{77}+\dfrac{-16}{77}\)

\(=\dfrac{37}{11}\)

Answer 3

\(\dfrac{25}{7}+\left(\dfrac{4}{11}-\dfrac{4}{7}\right)\\ =\dfrac{25}{7}+\left(\dfrac{28}{77}-\dfrac{44}{77}\right)\\ =\dfrac{25}{7}+-\dfrac{16}{77}\\ =\dfrac{275}{77}+-\dfrac{16}{77}\\ =\dfrac{259}{77}\)