Question

6/7,5/6,7/8,9/10,8/9

Hãy sắp xếp từ bé đến lớn

                       Giups em bài này đc ko ạ

Answer 1

\(\dfrac{6}{7}=1-\dfrac{1}{7}\)

\(\dfrac{5}{6}=1-\dfrac{1}{6}\)

\(\dfrac{7}{8}=1-\dfrac{1}{8}\)

\(\dfrac{9}{10}=1-\dfrac{1}{10}\)

\(\dfrac{8}{9}=1-\dfrac{1}{9}\)

Do \(\dfrac{1}{10}< \dfrac{1}{9}< \dfrac{1}{8}< \dfrac{1}{7}< \dfrac{1}{6}\)

\(\Rightarrow1-\dfrac{1}{6}< 1-\dfrac{1}{7}< 1-\dfrac{1}{8}< 1-\dfrac{1}{9}< 1-\dfrac{1}{10}\)

\(\Rightarrow\dfrac{5}{6}< \dfrac{6}{7}< \dfrac{7}{8}< \dfrac{8}{9}< \dfrac{9}{10}\)

Answer 2

6/7=1-1/7

5/6=1-1/6

7/8=1-1/8

9/10=1-1/10

8/9=1-1/9

mà 1/6>1/7>1/8>1/9>1/10

nên 5/6<6/7<7/8<8/9<9/10