Tính ( 3/10 – 4/15 – 7/20 ) .5/19 (1/14 + 1/7 + 3/35 ) . -4/3 22/07/2021 Bởi Gabriella Tính ( 3/10 – 4/15 – 7/20 ) .5/19 (1/14 + 1/7 + 3/35 ) . -4/3
($\frac{3}{10}$ -$\frac{4}{15}$ -$\frac{7}{20}$ ).$\frac{5}{19}$ =$\frac{-19}{60}$ .$\frac{5}{19}$ =$\frac{-1}{12}$ ($\frac{1}{14}$ +$\frac{1}{7}$ +$\frac{3}{35}$ ).$\frac{-4}{3}$ =$\frac{3}{10}$ .$\frac{-4}{3}$= $\frac{-2}{5}$ Bình luận
($\frac{3}{10}$ -$\frac{4}{15}$ -$\frac{7}{20}$ ).$\frac{5}{19}$ =$\frac{-19}{60}$ .$\frac{5}{19}$ =$\frac{-1}{12}$
($\frac{1}{14}$ +$\frac{1}{7}$ +$\frac{3}{35}$ ).$\frac{-4}{3}$ =$\frac{3}{10}$ .$\frac{-4}{3}$= $\frac{-2}{5}$