Question

[Ly Linh Lung]

TÍnh hợp lí:

a.\(\frac{4}{20}\)+ \(\frac{16}{42}\)+ \(\frac{6}{15}\)+ \(\frac{-3}{5}\)+ \(\frac{2}{21}\)+ \(\frac{-10}{21}\)+ \(\frac{3}{20}\)

b. \(\frac{42}{46}\)+ \(\frac{250}{186}\)+ \(\frac{-2121}{2323}\)+ \(\frac{-125125}{143143}\)

c. \(\frac{5}{6}\)+ \(\frac{3}{5}\): 3 - \(\frac{4}{27}\). (-3)²  

d. 2\(\frac{2}{3}\). 0,25 . (0,415- \(\frac{3}{200}\)+ \(\frac{3}{5}\))

e. \(\frac{3}{5}\)- \(\frac{-7}{10}\)- \(\frac{13}{-20}\)+ \(\frac{1}{20}\)

g. \(\frac{-7}{9}\). \(\frac{3}{13}\)+ \(\frac{-7}{9}\). \(\frac{10}{13}\)+ 1\(\frac{7}{9}\)