Tính: -3 3/4 +-10/25+-6/12

* Hướng dẫn giải

$-3\frac{3}{4}+\frac{-10}{25}+\frac{-6}{12}=\frac{-15}{4}+\frac{-2}{5}+\frac{-1}{2}=\frac{-75}{20}+\frac{-8}{20}+\frac{-10}{20}=\frac{-93}{20}$