Răspuns:
[tex]2\frac{1}{4}*\frac{-16}{27}=\frac{2*4+1}{4}*\frac{-16}{27}=\frac{9}{4}*\frac{-16}{27}=\frac{1}{1}*\frac{-4}{3}=\frac{-4}{3}=-1,(3)[/tex]
b) [tex]-2,5*\frac{-3}{46}=\frac{-25}{10}*\frac{-3}{46}=\frac{75}{460}=\frac{15}{92}[/tex]
c) [tex]1,2 * \frac{5}{6}*2,1*\frac{-10}{7}=\frac{12}{10}*\frac{5}{6}*\frac{21}{10}*\frac{-10}{7}=\frac{2}{2}*\frac{1}{1}*\frac{3}{1}*\frac{-1}{1}=\frac{-6}{2}=-3[/tex]
