220. Выполните вычитание: a) 4$$\frac{14}{19}$$-2$$\frac{5}{19}$$: б) 8$$\frac{7}{10}$$-5: в) 12 -$$\frac{7}{18}$$: г) 11-3$$\frac{5}{12}$$: д) 8$$\frac{7}{15}$$-3$$\frac{11}{15}$$: е) 10$$\frac{9}{14}$$-3$$\frac{9}{14}$$:

a) 4$$\frac{14}{19}$$-2$$\frac{5}{19}$$ = (4 - 2) + ($$\frac{14}{19}$$-$$\frac{5}{19}$$) = 2 + $$\frac{14-5}{19}$$ = 2 + $$\frac{9}{19}$$ = 2$$\frac{9}{19}$$

Ответ: 2$$\frac{9}{19}$$

б) 8$$\frac{7}{10}$$-5 = (8 - 5) + $$\frac{7}{10}$$ = 3 + $$\frac{7}{10}$$ = 3$$\frac{7}{10}$$

Ответ: 3$$\frac{7}{10}$$

в) 12 -$$\frac{7}{18}$$ = $$\frac{12}{1}$$ - $$\frac{7}{18}$$ = $$\frac{12 \times 18}{1 \times 18}$$ - $$\frac{7}{18}$$ = $$\frac{216}{18}$$ - $$\frac{7}{18}$$ = $$\frac{216-7}{18}$$ = $$\frac{209}{18}$$ = 11$$\frac{11}{18}$$

Ответ: 11$$\frac{11}{18}$$

г) 11-3$$\frac{5}{12}$$ = (11 - 3) - $$\frac{5}{12}$$ = 8 - $$\frac{5}{12}$$ = $$\frac{8}{1}$$ - $$\frac{5}{12}$$ = $$\frac{8 \times 12}{1 \times 12}$$ - $$\frac{5}{12}$$ = $$\frac{96}{12}$$ - $$\frac{5}{12}$$ = $$\frac{96-5}{12}$$ = $$\frac{91}{12}$$ = 7$$\frac{7}{12}$$

Ответ: 7$$\frac{7}{12}$$

д) 8$$\frac{7}{15}$$-3$$\frac{11}{15}$$ = (8 - 3) + ($$\frac{7}{15}$$-$$\frac{11}{15}$$) = 5 + $$\frac{7-11}{15}$$ = 5 - $$\frac{4}{15}$$ = $$\frac{5}{1}$$ - $$\frac{4}{15}$$ = $$\frac{5 \times 15}{1 \times 15}$$ - $$\frac{4}{15}$$ = $$\frac{75}{15}$$ - $$\frac{4}{15}$$ = $$\frac{75-4}{15}$$ = $$\frac{71}{15}$$ = 4$$\frac{11}{15}$$

Ответ: 4$$\frac{11}{15}$$

e) 10$$\frac{9}{14}$$-3$$\frac{9}{14}$$ = (10 - 3) + ($$\frac{9}{14}$$-$$\frac{9}{14}$$) = 7 + 0 = 7

Ответ: 7