Найдите значение выраженияО. 7 5/18-3 2/27-11/54С. 8 7/12-4 5/18-1 1/4У. 9 3/20-2...

О.
$7 \frac{5}{18} - 3 \frac{2}{27} - \frac{11}{54} = 7 \frac{15}{54} - 3 \frac{4}{54} \\ - \frac{11}{54} = 4 \frac{11}{54} - \frac{11}{54} = 4$
С.
$8 \frac{7}{12} - 4 \frac{5}{18} - 1 \frac{1}{4} = 8 \frac{21}{36} - 4 \frac{10}{36} \\ - 1 \frac{9}{36} = 4 \frac{11}{36} - 1 \frac{9}{36} = 3 \frac{2}{36} =$
$= 3 \frac{1}{18}$
У.
$9 \frac{3}{20} - 2 \frac{3 }{25} - 4 = \\ 9 \frac{15}{100} - 2 \frac{12}{100} - 4 = 7 \frac{3}{100} - 4 =$
$= 3 \frac{3}{100}$
Г.
$5 \frac{11}{42} - 2 \frac{3}{14} - 1 \frac{1}{21} = 5 \frac{11}{42} - 2 \frac{9}{42} \\ - 1 \frac{2}{42} = 2$
Л.
$13 - 5 \frac{7}{12} - 1 \frac{4}{15} = 12 \frac{60}{60} - 5 \frac{35}{60 } \\ - 1 \frac{16}{60} = 6 \frac{9}{60} = 6 \frac{3}{20}$
Б.
$11 - 6 \frac{13}{21} - \frac{3}{14} = 10 \frac{42}{42} - 6 \frac{26}{42} \\ - \frac{9}{42} = 4 \frac{16}{42} - \frac{9}{42} = 4 \frac{7}{42} = 4 \frac{1}{6}$