Question

[VoThanhKiet]

rút gọn:  9/6.6/7+9/6.4/5

Answer 1

[Kiệt Nguyễn]

\(\frac{9}{6}.\frac{6}{7}+\frac{9}{6}.\frac{4}{5}\)

\(=\frac{9}{6}\left(\frac{6}{7}+\frac{4}{5}\right)\)

\(=\frac{9}{6}\left(\frac{30}{35}+\frac{28}{35}\right)\)

\(=\frac{3}{2}.\frac{58}{35}\)

\(=\frac{174}{70}\)

\(=\frac{87}{35}\)