Thực hiện các phép tính sau (rút gọn kết quả nếu c...

Câu hỏi: Thực hiện các phép tính sau (rút gọn kết quả nếu có thể):\(\begin{array}{l}a)\;\frac{5}{9} + \frac{2}{9} &  &  & b)\;\frac{3}{5} + \frac{3}{7} &  &  & c)\;\frac{7}{{15}} - \frac{2}{5}\\d)\;6 - \frac{5}{7} &  &  & e)\;\frac{2}{3} - \frac{1}{{12}} + \frac{3}{4} &  &  & f)\;\frac{{11}}{3} - 2 - \frac{1}{5}\end{array}\)

A \(a)\frac{7}{9}\)                          \(b)\frac{{36}}{{35}}\)                          \(c)\frac{1}{{15}}\)                              \(d)\frac{{37}}{7}\)                  \(e)\frac{4}{3}\)                          \(f)\frac{{22}}{{15}}\)

B \(a)\frac{8}{9}\)                          \(b)\frac{{36}}{{35}}\)                          \(c)\frac{1}{{14}}\)                              \(d)\frac{{37}}{7}\)                  \(e)\frac{4}{3}\)                          \(f)\frac{{22}}{{14}}\)

C \(a)\frac{7}{9}\)                          \(b)\frac{{34}}{{35}}\)                          \(c)\frac{1}{{15}}\)                              \(d)\frac{{38}}{7}\)                  \(e)\frac{4}{3}\)                          \(f)\frac{{23}}{{15}}\)

D \(a)\frac{2}{9}\)                          \(b)\frac{{36}}{{35}}\)                          \(c)\frac{1}{{13}}\)                              \(d)\frac{{37}}{7}\)                  \(e)\frac{4}{7}\)                          \(f)\frac{{22}}{{15}}\)