2,7:18/25*1,6-2целых2/25+1,28

$1) 2\frac{7}{10} : \frac{18}{25} = \frac{27}{10} * \frac{25}{18} = \frac{3}{2} * \frac{5}{2} = \frac{15}{4}=3 \frac{3}{4}$
2) $3 \frac{3}{4}* 1 \frac{6}{10} = \frac{15}{4} * \frac{16}{10} = \frac{3}{1} * \frac{4}{2} = \frac{3}{1} * \frac{2}{1} =6$
3) $6 - 2 \frac{2}{25} = 4 \frac{2}{25}$
4) $2 \frac{2}{25} + 1 \frac{28}{100} = (3) \frac{8+28}{100} =3 \frac{36}{100}$
в десятичных 3,36