Question

помогите пж номер 927, 928​

Answer 1

927.

3.

$\frac{2.8 + 1.7}{3.5 - 2.6} = \frac{4.5}{0.9} = \frac{4.5 \times 100}{0.9 \times 100} = \frac{450}{90} = 5$