Đáp án:
$\dfrac{341}{60}$
Giải thích các bước giải:
$1\dfrac{13}{15}.|-3|+(\dfrac{8}{15}-25\%):3\dfrac{2}{5}$
$=\dfrac{28}{15}.3+(\dfrac{8}{15}-\dfrac{25}{100}):\dfrac{17}{5}$
$=\dfrac{28}{5}+(\dfrac{8}{15}-\dfrac{1}{4}).\dfrac{5}{17}$
$=\dfrac{28}{5}+\dfrac{17}{60}.\dfrac{5}{17}$
$=\dfrac{28}{5}+\dfrac{1}{12}$
$=\dfrac{341}{60}$