5. Решите уравнения. a) 3\frac{8}{9}-x = 1\frac{5}{9} б) (y-8\frac{12}{19})+1\frac{7}{19}

a) $$3\frac{8}{9} - x = 1\frac{5}{9}$$

$$x = 3\frac{8}{9} - 1\frac{5}{9}$$

$$x = 2\frac{3}{9} = 2\frac{1}{3}$$

б) $$(y - 8\frac{12}{19}) + 1\frac{7}{19} = 0$$

$$y - 8\frac{12}{19} = -1\frac{7}{19}$$

$$y = 8\frac{12}{19} - 1\frac{7}{19}$$

$$y = 7\frac{5}{19}$$

Ответ: a) $$2\frac{1}{3}$$, б) $$7\frac{5}{19}$$