Thực hiện phép tính a) -6/11 + 13/22 + -3/17 + 5/-11 + 9/22 b) 16 3/13

* Hướng dẫn giải

a)$\frac{-6}{11}+\frac{13}{22}+\frac{-3}{17}+\frac{5}{-11}+\frac{9}{22}$ $=\left(\frac{-6}{11}+\frac{-5}{11}\right)+\left(\frac{13}{22}+\frac{9}{22}\right)+\frac{-3}{17}$$=-1+1+\frac{-3}{17}=\frac{-3}{17}$

b) $16\frac{3}{13}-\left(3\frac{5}{7}+10\frac{3}{13}\right)$$=\left(16\frac{3}{13}-10\frac{3}{13}\right)-3\frac{5}{7}=6-3\frac{5}{7}$$=5\frac{7}{7}-3\frac{5}{7}=2\frac{2}{7}$