Tính các tổng sau: 10+11/19+8/19

* Hướng dẫn giải

$\begin{array}{l}a)11;\begin{array}{cccc}& & & \end{array}b)\frac{-5}{7};\\ c)\frac{5}{4}+\frac{-1}{2}+\frac{-7}{8}=\frac{-1}{8};\end{array}$

$\begin{array}{l}d)\frac{-5}{6}+\frac{3}{4}+\frac{-13}{15}=\frac{-59}{20};\\ \\ e)\frac{-6}{7}+\frac{-4}{5}+(-1)=\frac{-93}{35};\\ \\ f)\frac{21}{10}\end{array}$