=10/3-17/21.7/5(. là nhân đó nha mọi người)
=10/3-17/15
=11/5
\(\frac{10}{3}-\left(6\frac{1}{7}-5\frac{1}{3}\right):\frac{5}{7}\)
\(=\frac{10}{3}-\left(\frac{43}{7}-\frac{16}{3}\right):\frac{5}{7}\)
\(=\frac{10}{3}-\frac{17}{21}:\frac{5}{7}\)
\(=\frac{10}{3}-\frac{17}{15}\)
\(=\frac{50}{15}-\frac{17}{15}=\frac{50-17}{15}=\frac{33}{15}=\frac{11}{5}\)