Question

545. найдите значение выражения: ​

Answer 1

Пошаговое объяснение:

$14\frac{1}{6}-(8\frac{9}{10}-b) = 14\frac{1}{6}-8\frac{9}{10}+b=14\frac{5}{30}-8\frac{27}{30}+b=13\frac{35}{30}-8\frac{27}{30}+b=5\frac{8}{30}+b=5\frac{4}{15}+b=5\frac{4}{15}+5\frac{2}{3}=5\frac{4}{15}+5\frac{10}{15}=10\frac{14}{15}$

$(20\frac{1}{5}-b)-6\frac{1}{3}=20\frac{1}{5}-6\frac{1}{3}-b=20\frac{3}{15}-6\frac{5}{15}-b=19\frac{18}{15}-6\frac{5}{15}-b=13\frac{13}{15}-b=13\frac{13}{15}-11\frac{2}{15}=2\frac{11}{15}$