(x-0.8):16/19=3 1/6:13 1/3

Решаем пропорцию:[latex]frac{x-0,8}{ frac{16}{19} } = frac{3 frac{1}{6} }{13 frac{1}{3} } \ \ frac{16}{19}* 3frac{1}{6} =(x-0.8)*13 frac{1}{3}[/latex][latex] frac{16}{19} * frac{19}{6} =13 frac{1}{3} x- frac{8}{10} * frac{40}{3} \ \ 13 frac{1}{3} x= frac{16}{6} + frac{32}{3} \ \ 13 frac{1}{3} x= frac{16}{6} + frac{64}{6} \ \ 13 frac{1}{3} x= frac{80}{6} \ \ x=frac{80}{6}:13 frac{1}{3} \ \ x=frac{80}{6}* frac{3}{40} \ \ x=frac{2}{2}* frac{1}{1} \ \ x=1[/latex]