Question

решите задачу 1138 .плиз срочно

Answer 1

$2 \frac{3}{5} - 1 \frac{4}{5} = \frac{13}{5} - \frac{9}{5} = \frac{4}{5} \\ 2 \frac{3}{5} + \frac{4}{5} = \frac{13}{5} + \frac{4}{5} = \frac{17}{5} = 3 \frac{2}{5}$