[tex]\dfrac{-3\cdot (-0,5)^{2}+ (-3) }{-0,1\cdot (-1,25+5\cdot (-0,5) )} =\\\\\\=\dfrac{-3\cdot 0,25+ (-3) }{-0,1\cdot (-1,25 -2,5 )} =\\\\\\=\dfrac{-0,75+ (-3) }{-0,1\cdot (-3,75)}=\\\\\\=\dfrac{-3,75}{0,375} = -3,75\div 0,375=\\\\\\=-3\dfrac{75}{100} \div \dfrac{375}{1000} =-\dfrac{375}{100}\cdot \dfrac{1000}{375}=- 10[/tex]
