$\text {a, $\frac{1}{8}$- $\frac{1}{2}$}$
$\text {=$\frac{1}{8}$- $\frac{4}{8}$ }$
$\text {=$\frac{-3}{8}$ }$
$\text {b, $\frac{-11}{12}$- (-1) }$
$\text {=$\frac{-11}{12}$+$\frac{12}{12}$ }$
$\text {=$\frac{1}{12}$ }$
$\text {c, $\frac{3}{5}$- $\frac{5}{6}$ }$
$\text {=$\frac{15}{30}$ -$\frac{25}{30}$ }$
$\text {=$\frac{-10}{30}$= $\frac{-1}{3}$ }$
$\text {d, $\frac{-1}{16}$- $\frac{1}{15}$ }$
$\text {=$\frac{-15}{240}$- $\frac{16}{240}$ }$
$\text {=$\frac{-31}{240}$ }$
$\text {e, $\frac{11}{36}$- $\frac{7}{24}$ }$
$\text {=$\frac{22}{72}$- $\frac{21}{72}$ }$
$\text {=$\frac{1}{72}$ }$
$\text {g, $\frac{-5}{9}$- $\frac{5}{12}$ }$
$\text {=$\frac{-20}{46}$- $\frac{15}{36}$ }$
$\text {=$\frac{-35}{36}$ }$
$\text {Chúc bạn học tốt~}$
