Question

помогите пож. 1/4+4/7+9/28

Answer 1

$\frac{1}{4} + \frac{4}{7} + \frac{9}{28} = \frac{7}{28} + \frac{16}{28} + \frac{9}{28} = \frac{32}{28} = 1 \frac{4}{28} = 1 \frac{1}{7}$