№1 Сократить дробь: 1) 6/40 2) 32/72 3) 16/72 4) 63/91

1) \(\frac{6}{40} = \frac{2 \cdot 3}{2 \cdot 20} = \frac{3}{20}\) 2) \(\frac{32}{72} = \frac{8 \cdot 4}{8 \cdot 9} = \frac{4}{9}\) 3) \(\frac{16}{72} = \frac{8 \cdot 2}{8 \cdot 9} = \frac{2}{9}\) 4) \(\frac{63}{91} = \frac{7 \cdot 9}{7 \cdot 13} = \frac{9}{13}\)