[tex]\displaystyle [(-1,125):(0,75)-1,25 \cdot 0,5(3)]:[-3,(3)]= \\ \\ =\left(- \frac{1125}{1000} : \frac{75}{100} - \frac{125}{100} \cdot \frac{48}{90} \right):\left(- \frac{30}{9} \right)= \\ \\ =\left(- \frac{1125}{1000} \cdot \frac{100}{75} - \frac{6000}{9000} \right):\left(- \frac{30}{9} \right)=[/tex]
[tex]\displaystyle =\left(- \frac{112500}{75000} - \frac{6000}{9000} \right):\left(- \frac{30}{9} \right)= \\ \\ = \left( -\frac{337500}{225000} - \frac{150000}{225000} \right) \cdot \left(- \frac{9}{30} \right)= \\ \\ =- \frac{487500}{225000} \cdot \left(- \frac{9}{30} \right)= \\ \\ = \frac{4387500}{6750000} = \\ \\ =\boxed{ \frac{13}{20} }[/tex]
