Dấu \("."\)là dấu nhân nhé !!!
\(\frac{6}{11}:\frac{4}{3}:\frac{5}{11}:\frac{4}{3}\)
\(=\frac{6}{11}.\frac{3}{4}.\frac{11}{5}.\frac{3}{4}\)
\(=\left(\frac{6}{11}.\frac{11}{5}\right).\left(\frac{3}{4}.\frac{3}{4}\right)\)
\(=\frac{6}{5}.\frac{9}{16}\)
\(=\frac{27}{40}\)
Chúc bạn học tốt !!!