441. и 442. пожалуйста помогите

1)- $\frac{3}{5}$ - $\frac{1}{5}$ =- $\frac{4}{5}$
2)- $\frac{1}{3}$ - $\frac{2}{3}$ =- $\frac{3}{3}$ =-1
3)- $\frac{3}{7}$ - $\frac{4}{7}$ =- $\frac{7}{7}$ =-1
4)- $\frac{1}{4}$ - $\frac{5}{7}$ =- $\frac{7-20}{28}$ =- $\frac{27}{28}$
5)- $\frac{5}{6}$ - $\frac{1}{3}$ =- $\frac{5-2}{6}$ =- $\frac{7[tex] \frac{5}{8}$ }{6} [/tex]=-1 $\frac{1}{6}$
6)- $\frac{1}{8}$ - $\frac{3}{4}$ =- $\frac{1-6}{28}$ =- $\frac{7}{28}$ =- $\frac{1}{4}$
7)-4 $\frac{3}{8}$ -2 $\frac{1}{4}$ =-4 $\frac{3}{8}$ -2 $\frac{2}{8}$ =-6
8)-6 $\frac{1}{2}$ -3 $\frac{5}{7}$ =-6 $\frac{7}{14}$ -3 $\frac{10}{14}$ =-9 $\frac{17}{14}$ =-10 $\frac{3}{4}$