a)\(\dfrac{7}{8}\)x\(\dfrac{3}{13}\)+\(\dfrac{4}{9}\)x\(\dfrac{4}{13}\)
b)\(\dfrac{6}{5}\)+\(\dfrac{7}{3}\)+\(\dfrac{8}{9}\)
c)23: \(\dfrac{5}{14}\)+\(\dfrac{6}{7}\)+\(\dfrac{4}{9}\)
d)\(4\dfrac{1}{4}\)+\(7\dfrac{3}{7}\)-\(2\dfrac{4}{17}\)
e)8-(9\(\dfrac{2}{11}\)+\(\dfrac{8}{33}\))

Giúp em với ạ!!!

Thực hiện các phép tính:

a/ \(\dfrac{2}{3}\)+\(\dfrac{1}{5}\).\(\dfrac{10}{7}\)\(\)

b/ \(\dfrac{7}{12}\)-\(\dfrac{27}{7}\)\(\).\(\dfrac{1}{8}\)

c/ \(\dfrac{5}{9}\).\(\dfrac{7}{13}\)\(\)+\(\dfrac{5}{9}\).\(\dfrac{9}{13}\)-\(\dfrac{3}{13}\).\(\dfrac{5}{9}\)

Em cần ngay ạ!!!

Tính (Tính hợp lí nếu có thể)

a) \(\dfrac{-7}{12}\)-\(\dfrac{3}{36}\)

b) (4-\(\dfrac{5}{12}\)):2+\(\dfrac{5}{24}\)

c) \(\dfrac{8}{9}\)+\(\dfrac{1}{9}\).\(\dfrac{2}{13}\)+\(\dfrac{1}{9}\).\(\dfrac{11}{13}\)

d) \(\dfrac{3}{4}\).\(\dfrac{8}{9}\).\(\dfrac{15}{16}\).  ...  .\(\dfrac{9999}{10000}\)

e) \(\dfrac{3}{1.4}\)+\(\dfrac{3}{4.7}\)+\(\dfrac{3}{7.10}\)+...+\(\dfrac{3}{97.100}\)

*Lưu ý: Mong các anh chị trình bày chi tiết để em có thể hiểu bài, em xin các anh chị đừng viết mỗi kết quả xong em chả biết một cái gì ;-;

Tính:

a) \(\dfrac{3}{8}+\dfrac{7}{8}\)                          b) \(\dfrac{7}{9}-\dfrac{4}{9}\)                      c) \(\dfrac{5}{6}+\dfrac{1}{8}\)                       d) \(\dfrac{9}{15}-\dfrac{2}{5}\)

e) \(\dfrac{2}{5}+\dfrac{3}{5}+\dfrac{9}{5}\)                  g) \(\dfrac{8}{10}-\dfrac{1}{10}-\dfrac{3}{10}\)                  h) \(\dfrac{23}{7}-\dfrac{4}{7}+\dfrac{2}{7}\)

Tính: 

a) \(\dfrac{13}{14}\)-\(\dfrac{-7}{8}\)+\(\dfrac{-3}{2}\)

b) \(\dfrac{5}{17}\)+\(\dfrac{-15}{34}\).\(\dfrac{2}{5}\)

c) \(\dfrac{1}{5}\):\(\dfrac{1}{10}\)-\(\dfrac{1}{3}\).(\(\dfrac{6}{5}\)-\(\dfrac{2}{4}\))

d) \(\dfrac{-3}{4}\):(\(\dfrac{12}{-5}\)-\(\dfrac{-7}{10}\))

*Lưu ý: Không viết luôn kết quả, giải chi tiết.

1)  \(\dfrac{5}{13}\)  +\(\dfrac{-5}{17}\) +   \(\dfrac{-20}{41}\)   +   \(\dfrac{8}{13}\) +\(\dfrac{-21}{41}\)

2)  \(\dfrac{1}{5}\)  +  \(\dfrac{-2}{9}\)  +   \(\dfrac{-7}{9}\) +   \(\dfrac{4}{5}\)  +\(\dfrac{16}{17}\)

3) \(\dfrac{2}{3.5}\)  + \(\dfrac{2}{5.7}\) +\(\dfrac{2}{7.9}\)  +....................+ \(\dfrac{2}{99.101}\)

Thực hiện phép tính: 

a) \(\dfrac{8}{13}\) + \(\dfrac{5}{13}\)

b)\(\dfrac{2}{3}\) + \(\dfrac{-2}{5}\) + \(\dfrac{-5}{6}\) - \(\dfrac{13}{10}\) 

c) -\(\dfrac{2}{7}\) - (\(\dfrac{5}{11}\) - \(\dfrac{9}{7}\)) + \(\dfrac{5}{11}\)

d) \(\dfrac{-3}{7}\) x \(\dfrac{-1}{9}\) + \(\dfrac{7}{-18}\) x \(\dfrac{-3}{7}\) + \(\dfrac{5}{6}\) x \(\dfrac{-3}{7}\)

e) \(11\dfrac{1}{4}\) - (\(2\dfrac{5}{7}\) + \(5\dfrac{1}{4}\))

f) (\(8\dfrac{5}{11}\) + \(3\dfrac{5}{8}\)) - \(3\dfrac{5}{11}\)

g) -\(\dfrac{1}{4}\) x \(13\dfrac{9}{11}\) - 0,25 x \(6\dfrac{2}{11}\)

h) \(\dfrac{4}{9}\) : (-\(\dfrac{1}{7}\)) + \(6\dfrac{5}{9}\) : (-\(\dfrac{1}{7}\))