Помогите пожалуйста -5 целых 7/9 + (- 3 целых 4/9) : - 5/8 + (-11/12): - 4 целых 5/14 +...

Решите задачу:

$-5 \frac{7}{9} +(-3 \frac{4}{9})= -5 \frac{7}{9} -3 \frac{4}{9}=-9 \frac{2}{9}$
$-\frac{5}{8} +(- \frac{11}{12})= -\frac{15}{24} - \frac{22}{24}=-1 \frac{13}{24}$
$-4 \frac{5}{14} +(-7 \frac{10}{21})= - \frac{61}{14} - \frac{157}{21}=\frac{-183-314}{42}=-11 \frac{35}{42}$
$-\frac{7}{12} + \frac{9}{10})= -\frac{35}{60} + \frac{54}{60}= \frac{19}{60}$
$5 \frac{2}{9} +(-2 \frac{3}{4})= \frac{47}{9} - \frac{11}{4}=\frac{188}{36} - \frac{99}{36}=2 \frac{17}{36}$
$-5 \frac{3}{8} +4 \frac{9}{10})= -\frac{43}{8} + \frac{49}{10}=-\frac{215}{40} + \frac{196}{40}=- \frac{19}{40}$
$3 \frac{1}{4}+(-3 \frac{2}{3} )+(-4 \frac{1}{5})= \frac{13}{4}- \frac{11}{3}- \frac{21}{5} = \frac{195-220-252}{60}=- \frac{277}{60}=-4 \frac{37}{60}$