Плиииз помоготе!!!! Срочно надо!!!

А) $\frac{4,8}{7,2}= \frac{2,4}{3,6}= \frac{24}{36}= \frac{6}{9}= \frac{2}{3}$

б) $\frac{0,36}{0,72} = \frac{36}{72} = \frac{1}{2} = 0,5$

в) $\frac{4,2*14,4}{8,4*0,6}= \frac{60,48}{5,04} = \frac{6048}{504} = 12$

г) $(0,62-2 \frac{4}5} :8 \frac{3}{4} )*3 \frac{1}{3} = (0,62-2,8*8,75)*3 \frac{1}{3} = (0,62-24,5)*3 \frac{1}{3}$ = $=-23,88*\frac{4}{3} = -\frac{23,88*4}{3} = -31,84$