Đáp án:
$3\dfrac{2}{9} - (1\dfrac{5}{8} + 1\dfrac{2}{9}) - \dfrac{3}{8}$
$= \dfrac{29}{9} - (\dfrac{13}{8} + \dfrac{11}{9})- \dfrac{3}{8}$
$ = \dfrac{29}{9}- (\dfrac{117}{72} + \dfrac{88}{72}) -\dfrac{3}{8}$
$ = \dfrac{29}{9} - \dfrac{205}{72} - \dfrac{3}{8}$
$ = \dfrac{232}{72} - \dfrac{205}{72} - \dfrac{3}{8}$
$ = \dfrac{3}{8} - \dfrac{3}{8}$
$ = 0$
