5. \(\dfrac{-3}{7}\) + \(\dfrac{5}{13}\) + \(\dfrac{-4}{12}\)

6. \(\dfrac{-5}{21}\) + \(\dfrac{-2}{21}\) + \(\dfrac{8}{24}\)

7. \(\dfrac{5}{13}\) + \(\dfrac{-5}{7}\) + \(\dfrac{-20}{41}\) + \(\dfrac{8}{13}\) + \(\dfrac{-21}{41}\)

Giúp tớ với ạ🥺👉🏻👈🏻 Tớ cảm ơn nhiều🥰

1, \(\dfrac{-5}{7}\) . \(\dfrac{2}{11}\)  + \(\dfrac{-5}{7}\) . \(\dfrac{9}{11}\) + \(1\dfrac{5}{7}\)

2,\(-3\dfrac{4}{13}\) . \(15\dfrac{3}{41}\) + \(3\dfrac{4}{13}\) . \(2\dfrac{3}{41}\)

3, \(\dfrac{4}{5}\) . \(15\dfrac{1}{4}\)  - \(\dfrac{4}{5}\)   . \(15\dfrac{1}{3}\) + \(\dfrac{11}{30}\)

4,\(\dfrac{4}{20}\) + \(\dfrac{16}{42}\) + \(\dfrac{6}{15}\) - \(\dfrac{3}{5}\) + \(\dfrac{2}{21}\)  - \(\dfrac{10}{21}\) + \(\dfrac{3}{10}\)

Giúp mik nha. Cảm ơn

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

1. a) \(\dfrac{5}{3}\) . \(\dfrac{11}{7}\) - \(\dfrac{5}{7}\) . \(\dfrac{5}{3}\)

b) (0,125)\(^{16}\). (-8)\(^{16}\)

c) \(\dfrac{9^2.9^3}{3^9}\)

d) \(\dfrac{9}{24}\) - \(\dfrac{7}{41}\) + \(\dfrac{15}{24}\) + 0,75 - \(\dfrac{34}{41}\)

e) \(5\dfrac{2}{7}\) . ( \(-\dfrac{1}{3}\)) - \(2\dfrac{2}{7}\) . (\(-\dfrac{1}{3}\))

2. a) \(\dfrac{3}{4}\) + \(\dfrac{2}{3}x\) = \(\dfrac{1}{2}\)

b) (2x - 1)\(^2\) = 25

c) | x + 5 | - 6 = 9

Thực hiện phép tính (tính hợp lý nếu có thể): 

a) \(\dfrac{5}{9}.\dfrac{7}{13}+\dfrac{5}{9}.\dfrac{8}{13}-\dfrac{5}{13}.\dfrac{2}{9}\)             b) \(12\dfrac{5}{14}-\left(3\dfrac{5}{7}+5\dfrac{5}{14}\right)\) 

c)\(\dfrac{-2}{5}+\dfrac{7}{11}+\dfrac{-11}{10}+\dfrac{7}{-11}\)             d) \(\dfrac{1}{2}+\dfrac{-2}{3}+\dfrac{1}{6}+\dfrac{-2}{5}\)