5. Реши уравнения: а) $$x + 1 \frac{7}{9} = 4 \frac{5}{12}$$; б) $$y - 2 \frac{9}{16} = 3 \frac{13}{24}$$.

а) $$x + 1 \frac{7}{9} = 4 \frac{5}{12}$$. $$x = 4 \frac{5}{12} - 1 \frac{7}{9} = 4 \frac{15}{36} - 1 \frac{28}{36} = 3 \frac{51}{36} - 1 \frac{28}{36} = 2 \frac{23}{36}$$. б) $$y - 2 \frac{9}{16} = 3 \frac{13}{24}$$. $$y = 3 \frac{13}{24} + 2 \frac{9}{16} = 3 \frac{26}{48} + 2 \frac{27}{48} = 5 \frac{53}{48} = 6 \frac{5}{48}$$. Ответ: а) $$2 \frac{23}{36}$$, б) $$6 \frac{5}{48}$$