11/4*(-4/11)-5/4:11/4 = 11/4*(-4)/11 - 5/4*4/11 = -4/4-5/11 = -1- 5/11 = - (1+5/11)

* Hướng dẫn giải

$=\frac{11}{4}.\frac{(-4)}{11}-\frac{5}{4}.\frac{4}{11}$

$=-\frac{4}{4}-\frac{5}{11}$

$=-1-\frac{5}{11}$

$=-(1+\frac{5}{11})$

$=-(\frac{11}{11}+\frac{5}{11})$

$=-\left(\frac{11+5}{11}\right)$

$=-\frac{16}{11}$