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

Решите задачу:

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