Question

(1 4/9+2 5/6-2 3/4)х(2 1/2-11/14) решите

Answer 1

$1 frac{4}{9} + 2 frac{5}{6} - 2 frac{3}{4} = frac{13}{9} + frac{17}{6} - frac{11}{4} = frac{52+102-99}{36} = frac{55}{36}$
$2 frac{1}{2} - frac{11}{14} = frac{5}{2} - frac{11}{14} = frac{35-11}{14} = frac{24}{14}$
$frac{55}{36} * frac{24}{14} = frac{55*24}{36*14} = frac{55*2}{3*14} = frac{110}{42} = frac{55}{21} = 2 frac{13}{21}$