Вычислите преобразовав десятичную дробь в обыкновенную: а)0.75:3/ б)0.625:5/8...

$\frac{625}{1000}/\frac{5}{8}= \frac{625}{1000}* \frac{8}{5}= \frac{125}{1000}* \frac{8}{1}= \frac{1000}{1000}=1$
$\frac{9}{15}/ \frac{5}{8}/ \frac{64}{100}= \frac{9*8*100}{15*5*64}= \frac{9*20}{15*8}=\frac{9*4}{3*8}= \frac{3*1}{1*2}=1 \frac{1}{2}$
$\frac{13}{14}/ \frac{65}{10}*\frac{11}{130}= \frac{13*10*11}{14*65*130}= \frac{2*11}{14*13*10}= \frac{11}{7*13*10}= \frac{11}{910}$
$\frac{75}{100}/3= \frac{75*1}{100*3}= \frac{25}{100}= \frac{1}{4}$

1) 48÷ $2 \frac{2}{11}$ = $\frac{48*11}{24}= \frac{2*11}{1}=22$ (см)-ширина
2) $(2\frac{2}{11}+22)*2=24 \frac{2}{11}*2= \frac{532}{11}= 48\frac{4}{11}$ (см)-Р