Question

помогите решить побыстрее

Answer 1

$1)4 \frac{1}{5} - 2 \frac{3}{4} = 2 \frac{4 - 15}{20} = 1 \frac{20 + 4 - 15}{20} = 1 \frac{9}{20} \\ 2)1 \frac{9}{20} \times 2 \frac{2}{19} = \frac{29}{20} \times \frac{40}{19} = \frac{58}{19} = 3 \frac{1}{19}$