Question

[ღTruzgღ★ - FϏ]

mn ơi giúp mk với 

Answer 1

[Mai Anh Nguyen]

\(\frac{4}{5}\times\frac{13}{8}+\frac{13}{8}\times\frac{6}{5}\)

\(=\left(\frac{4}{5}+\frac{6}{5}\right)\times\frac{13}{8}\)

\(=2\times\frac{13}{8}\)

\(=\frac{13}{4}\)

\(\frac{2}{7}\div\frac{18}{5}+\frac{5}{8}\times\frac{5}{7}\)

\(=\frac{5}{63}+\frac{25}{56}\)

\(=\frac{265}{504}\)

\(\frac{2}{7}-\frac{1}{5}\div\frac{10}{7}\)

\(=\frac{2}{7}-\frac{7}{50}\)

\(=\frac{51}{350}\)

\(\frac{4}{3}\times\frac{40}{9}-\frac{4}{9}\times\frac{13}{3}\)

\(=\frac{160}{27}-\frac{52}{27}\)

\(=4\)

Answer 2

[Nguyễn Trần Gia Bách]

(4/5 + 13/8) * 13/8 = 97/40 * 13/8= 1261/320 

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