Сравните дроби с разными числитилями и знаменателями:4.7 и 16.28 4.9 и 8.15 5.13 и 7.18

1) [latex] \frac{4}{7} = \frac{16}{28} \\ \frac{4*4}{4*7} = \frac{16}{28} \\ \frac{16}{28} = \frac{16}{28} [/latex] 2) [latex] \frac{4}{9} \ \textless \ \frac{8}{15} \\ \frac{5*4}{5*9} \ \textless \ \frac{3*8}{3*15} \\ \frac{20}{45} \ \textless \ \frac{24}{45} [/latex] 3) [latex] \frac{5}{13} \ \textless \ \frac{7}{18} \\ \frac{18*5}{18*13} \ \textless \ \frac{13*7}{13*18} \\ \frac{90}{234} \ \textless \ \frac{91}{234} [/latex]