Вычислите: а) (8 7/12 - 2 17/36) * 2,7 - 4 1/3 : 0,65; б) (1 11/24 + 13/36) * 1,44 - 8/15 * 0,5625

а) $(8\frac{7}{12}-2\frac{17}{36})\cdot2,7-4\frac{1}{3}:0,65=10$ 1. $8\frac{7}{12}-2\frac{17}{36}=8\frac{21}{36}-2\frac{17}{36}=6\frac{4}{36}=6\frac{1}{9}$ 2. $6\frac{1}{9}\cdot2,7=\frac{55}{9}\cdot\frac{27}{10}=\frac{55\cdot3}{10}=\frac{165}{10}=16,5$ 3. $4\frac{1}{3}:0,65=\frac{13}{3}:\frac{65}{100}=\frac{13}{3}\cdot\frac{20}{13}=\frac{20}{3}=6\frac{2}{3}$ 4. $16,5-6\frac{2}{3}=16\frac{1}{2}-6\frac{2}{3}=16\frac{3}{6}-6\frac{4}{6}=15\frac{9}{6}-6\frac{4}{6}=9\frac{5}{6}$ **Ответ: $9\frac{5}{6}$** б) $(1\frac{11}{24}+\frac{13}{36})\cdot1,44-\frac{8}{15}\cdot0,5625=2,325$ 1. $1\frac{11}{24}+\frac{13}{36}=1\frac{33}{72}+\frac{26}{72}=1\frac{59}{72}$ 2. $1\frac{59}{72}\cdot1,44=\frac{131}{72}\cdot\frac{144}{100}=\frac{131\cdot2}{100}=\frac{262}{100}=2,62$ 3. $\frac{8}{15}\cdot0,5625=\frac{8}{15}\cdot\frac{5625}{10000}=\frac{8}{15}\cdot\frac{9}{16}=\frac{1\cdot3}{5\cdot2}=\frac{3}{10}=0,3$ 4. $2,62-0,3=2,32$ **Ответ: 2,32**