Question

[Hoàng Yến Chibi]

Tính bằng các thuận tiện: 10/7 x 2/3 + 5/6 : 3/10 - 2/3 x 3/7

Cac bn ơi giải hộ mik với

Answer 1

[๖ۣۜFunny-Ngốkツ]

\(\frac{10}{7}\cdot\frac{2}{3}+\frac{5}{6}:\frac{3}{10}-\frac{2}{3}\cdot\frac{3}{7}\)

\(=\left(\frac{10}{7}\cdot\frac{2}{3}-\frac{2}{3}\cdot\frac{3}{7}\right)+\frac{5}{6}\cdot\frac{10}{3}\)

\(=\frac{2}{3}\left(\frac{10}{7}-\frac{3}{7}\right)+\frac{5\cdot10}{6\cdot3}\)

\(=\frac{2}{3}\cdot1+\frac{25}{9}\)

\(=\frac{2}{3}+\frac{25}{9}\)

\(=\frac{31}{9}\)