найдите неизвестный член пропорции а) 3 целых 2/5:х=6 целых 4/5:1 целая 1/3

3\tt\displaystyle\frac{2}{5}:x=6\frac{4}{5}:1\frac{1}{3}\\\\

6\tt\displaystyle\frac{4}{5}*x=3\frac{2}{5}*1\frac{1}{3}\\\\

\tt\displaystyle\frac{6*5+4}{5}x=\frac{3*5+2}{5}*\frac{1*3+1}{3}\\\\

\tt\displaystyle\frac{34}{5}x=\frac{17}{5}*\frac{4}{3}\\\\

\tt\displaystyle\frac{34}{5}x=\frac{68}{15}\\\\

x=\tt\displaystyle\frac{68}{15}:\frac{34}{5}\\\\

x=\tt\displaystyle\frac{68}{15}*\frac{5}{34}\\\\

x=\tt\displaystyle\frac{34*2*5}{3*5*34}

x=\tt\displaystyle\frac{2}{3}