Question

\(\frac{4}{9}:\frac{8}{9}-\frac{7}{13}:\frac{21}{13}\)

Answer 1

1/6 nha

Answer 2

\(\frac{4}{9}:\frac{8}{9}-\frac{7}{13}:\frac{21}{13}\)

\(=\frac{4}{9}.\frac{9}{8}-\frac{7}{13}.\frac{13}{21}\)

\(=\frac{1}{2}-\frac{1}{3}\)

\(=\frac{3}{6}-\frac{2}{6}=\frac{1}{6}\)

Ủng hộ tui nha! :) 

Answer 3

4/9:8/9-7/13:21/13

 Hình như đề sai bn ak

Answer 4

1/6 nha

Answer 5

1/6 nha

Answer 6

\(\frac{4}{9}\): \(\frac{8}{9}\)- \(\frac{7}{13}\): \(\frac{21}{13}\)

= \(\frac{4}{9}\). \(\frac{9}{8}\)- \(\frac{7}{13}\). \(\frac{13}{21}\)

= \(\frac{4.9}{4.2.9}\)- \(\frac{7.13}{13.7.3}\)

= \(\frac{1}{2}\)- \(\frac{1}{3}\)= \(\frac{1}{6}\)

Answer 7

1/6 nha

Answer 8

\(\frac{4}{9}\div\frac{8}{9}-\frac{7}{13}\div\frac{21}{13}\)

\(=\frac{1}{2}-\frac{1}{3}\)

\(=\frac{3}{6}-\frac{2}{6}=\frac{1}{6}\)