5.439 Уменьшив числа 5$$\frac{4}{5}$$, 7$$\frac{1}{9}$$, 9$$\frac{9}{19}$$ на три, запишите результаты в виде неправильной дроби.

5$$\frac{4}{5}$$ - 3 = 2$$\frac{4}{5}$$ = $$\frac{2 \cdot 5 + 4}{5}$$ = $$\frac{10 + 4}{5}$$ = $$\frac{14}{5}$$ 7$$\frac{1}{9}$$ - 3 = 4$$\frac{1}{9}$$ = $$\frac{4 \cdot 9 + 1}{9}$$ = $$\frac{36 + 1}{9}$$ = $$\frac{37}{9}$$ 9$$\frac{9}{19}$$ - 3 = 6$$\frac{9}{19}$$ = $$\frac{6 \cdot 19 + 9}{19}$$ = $$\frac{114 + 9}{19}$$ = $$\frac{123}{19}$$ Ответ: $$\frac{14}{5}$$, $$\frac{37}{9}$$, $$\frac{123}{19}$$