\(\frac{11}{9}.\frac{15}{4}-\frac{11}{4}.\frac{7}{9}-\frac{11}{9}.\frac{5}{4}\)
=\(\frac{11}{9}.\frac{15}{4}-\frac{11}{9}.\frac{7}{4}-\frac{11}{9}.\frac{5}{4}\)
=\(\frac{11}{9}\).\(\left(\frac{15}{4}-\frac{7}{4}-\frac{5}{4}\right)\)
=\(\frac{11}{9}\).\(\frac{3}{4}\)
=\(\frac{11.3}{3.3.4}\)
=\(\frac{11}{12}\)
Chúc bn học tốt
Trả lời:
\(\frac{11}{9}.\frac{15}{4}-\frac{11}{4}.\frac{7}{9}-\frac{11}{9}.\frac{5}{4}\)
\(=\frac{11}{9}.\left(\frac{15}{4}-\frac{7}{4}-\frac{5}{4}\right)\)
\(=\frac{11}{9}.\frac{3}{4}\)
\(=\frac{11}{12}\)
Hok tốt!
Vuong Dong Yet
11/9 . 15/4 - 11/4 . 7/9 - 11/9 . 5/4
= 11/9 . ( 15/4 - 7/4 - 5/4 )
= 11/9 . 3/4
= 11/12