Question

chung to cac phan so sau bang nhau:

7/9 = 77/99 = 777/999

Answer 1

Ta có : \(\frac{77}{99}=\frac{77:11}{99:11}=\frac{7}{9};\frac{777}{999}=\frac{777:111}{999:111}=\frac{7}{9}\)

Mà : \(\frac{7}{9}=\frac{7}{9}=\frac{7}{9}\)

Vậy : \(\frac{7}{9}=\frac{77}{99}=\frac{777}{999}\)

Answer 2

Ta tách : \(\frac{77}{99}=\frac{77:11}{99:11}=\frac{7}{9}\)

\(\frac{777}{999}=\frac{777:111}{999:111}=\frac{7}{9}\)

\(\Rightarrow\frac{77}{99}=\frac{777}{999}\)