Bạn tham khảo!
{ $-2$ } $+$ { 75% $-$ $0,25$ } $:$ $\dfrac{9}{4}$ $-$ $\dfrac{11}{6}$
$=$ $-2$ $+$ { $\dfrac{3}{4}$ $-$ $0,25$ } $.$ $\dfrac{4}{9}$ $-$ $\dfrac{11}{6}$
$=$ $-2$ $+$ $\dfrac{1}{2}$ $.$ $\dfrac{4}{9}$ $-$ $\dfrac{11}{6}$
$=$ $-2$ $+$ $\dfrac{2}{9}$ $-$ $\dfrac{11}{6}$
$=$ $\dfrac{-16}{9}$ $-$ $\dfrac{11}{6}$
$=$ $\dfrac{-65}{18}$
$FbBinhne2k88$
