Вычислите 5/9+1целая 5/7*(4целых2/3-2целых5/8):1целая3/4

1) $4 \frac{2}{3} - 2\frac{5}{8} = 4\frac{16}{24} -2 \frac{15}{24} =2 \frac{1}{24} = \frac{49}{24}$
2) $1 \frac{5}{7} * \frac{49}{24} = \frac{12}{7} * \frac{49}{24} = \frac{7}{2} =3 \frac{1}{2}$
3) $\frac{7}{2} : 1 \frac{3}{4} = \frac{7}{2} : \frac{7}{4} = \frac{7}{2} * \frac{4}{7} =2$
4) $\frac{5}{9} + \frac{2}{1} = \frac{23}{9} =2 \frac{5}{9}$