4 7/9•1 13/14-3 7/12•1 13/14+1 13/14•1 13/18

Решите задачу:

$4 \frac{7}{9} * 1 \frac{13}{14} - 3 \frac{7}{12} * 1 \frac{13}{14} + 1 \frac{13}{14} * 1 \frac{13}{18} = 1 \frac{13}{14} *( 4\frac{7}{9} - 3\frac{7}{12} +1 \frac{13}{18} )=$
$\frac{27}{14} *( \frac{43}{9} - \frac{43}{12} + \frac{31}{18} )= \frac{27}{14} * \frac{172-129+62}{36} = \frac{27}{14} * \frac{105}{36} = \frac{27}{14} * \frac{35}{12} =$
$\frac{9}{2} * \frac{5}{4} = \frac{45}{8} = 5 \frac{5}{8} = 5,625$