Найдите значения выражения 12:3 3\8-1 1\4:15\32,1 31\35:(2-8\9:1 19/45),(1 1/35:4\5- 1...

$12:3 \frac{3}{8} -1 \frac{1}{4}: \frac{15}{32}=$

1) $12: \frac{27}{8}= \frac{12*8}{27}= \frac{32}{9}$

2) $\frac{5}{4}: \frac{15}{32}= \frac{5*32}{4*15}= \frac{8}{3}$

3) $\frac{32}{9}- \frac{8}{3}= \frac{32-24}{9}= \frac{8}{9}$

$1 \frac{31}{35}:(2- \frac{8}{9}:1 \frac{19}{45})=$

1) $\frac{8}{9}: \frac{64}{45}= \frac{8*45}{9*64}= \frac{5}{8}$

2) $2- \frac{5}{8}= \frac{16-5}{8}= \frac{11}{8}$

3) $\frac{66}{35}: \frac{11}{8}= \frac{66*8}{35*11}=1 \frac{13}{35}$

$(1 \frac{1}{35}: \frac{4}{5}-1 \frac{8}{35})*3 \frac{1}{3}=$

1) $\frac{36}{35}: \frac{4}{5}= \frac{36*8}{35*4}= \frac{9}{7}$

2) $\frac{9}{7}- \frac{43}{35}= \frac{45-43}{35}= \frac{2}{35}$

3) $\frac{2}{35}* \frac{10}{3}= \frac{4}{21}$

$(7-1 \frac{5}{9}: \frac{7}{24})*6 \frac{20}{27}=$
или
$(7-1 \frac{5}{9}: \frac{7}{24}): \frac{20}{27}$

1) $\frac{14}{9}: \frac{7}{24}= \frac{14*24}{9*7}= \frac{16}{3}$

2) $7- \frac{16}{3}= \frac{21-16}{3}= \frac{5}{3}$

3) $\frac{5}{3}* \frac{182}{27}= \frac{910}{81}=11 \frac{19}{27}$

или
3) $\frac{5}{3}: \frac{20}{27}= \frac{5*27}{3*20}= \frac{9}{4}=2 \frac{1}{4}$