помагите с номером 46 прошу

1. $8,5- \frac{1}{3} =8 \frac{5}{10}- \frac{1}{3}= \frac{85}{10}- \frac{1}{3}= \frac{255-10}{30}= \frac{245}{30}= \frac{49}{6}=8 \frac{1}{6}$
2. $4 \frac{1}{9}+1,8= 4 \frac{1}{9}+1 \frac{8}{10}= \frac{37}{9}+ \frac{18}{10}= \frac{370+162}{90}= \frac{532}{90}= \frac{266}{45}=5 \frac{41}{45}$
3. $\frac{1}{9}*0,12= \frac{1}{9}* \frac{12}{100}= \frac{12}{900}= \frac{1}{75}$
4. $\frac{6}{7} :0,6= \frac{6}{7}: \frac{6}{10} = \frac{6}{7}* \frac{10}{6} = \frac{6*10}{7*6}= \frac{10}{7}=1 \frac{3}{7}$