Bài 2:
a) 1$\frac{2}{3}$ x - $\frac{1}{4}$ = $\frac{5}{6}$
$\frac{5}{3}$ x = $\frac{13}{12}$
x = $\frac{13}{20}$
b) $\frac{3}{4}$ - (x + $\frac{1}{2}$) = $\frac{4}{5}$
x + $\frac{10}{20}$ = $\frac{-1}{20}$
x = $\frac{-11}{20}$
c) |x - $\frac{1}{2}$| - $\sqrt{$\frac{1}{9}$}$ = $\sqrt{$\frac{1}{4}$}$
|x - $\frac{1}{2}$| - $\frac{1}{3}$ = $\frac{1}{2}$
|x - $\frac{1}{2}$| = $\frac{5}{6}$
x = $\frac{4}{3}$ ; x = $\frac{-1}{3}$
