Question

3 номера зделайте пж

Answer 1

$4.\;\\\frac6{21}=\frac{2\cdot3}{7\cdot3}=\frac27\\\frac{10}{35}=\frac{2\cdot5}{7\cdot5}=\frac27\\\frac{14}{48}=\frac{7\cdot2}{24\cdot2}=\frac7{24}\neq\frac27\\\frac{12}{42}=\frac{2\cdot6}{7\cdot6}=\frac27\\\\5.\\\frac{60}{84}=\frac{12\cdot5}{12\cdot7}=\frac57\\\\7.\\\frac89=\frac{8\cdot2}{9\cdot2}=\frac{16}{18}$