1/3/5 - - 7/11

Lời giải:

\(1\frac{3}{5} - \frac{{ - 7}}{{11}} = \frac{8}{5} + \frac{7}{{11}}\)

\( = \frac{{88}}{{55}} + \frac{{35}}{{55}} = \frac{{123}}{{55}}\);