Найдите значения выражения 12:3 38-1 14:1532,1 3135:(2-89:1 19/45),(1 1/35:45- 1 8/35)*3 13,(7-1 59:724)62027

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

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