ГДЗ Математика 6 клас Істер — Вправа 442

1) $1\frac{1}{7} : 5\frac{1}{3} = \frac{8}{7} : \frac{16}{3} = \frac{8}{7} \cdot \frac{3}{16} = \frac{1 \cdot 3}{7 \cdot 2} = \frac{3}{14};$

2) $4\frac{1}{5} : 1\frac{1}{4} = \frac{21}{5} : \frac{5}{4} = \frac{21}{5} \cdot \frac{4}{5} = \frac{84}{25} = 3\frac{9}{25};$

3) $7\frac{1}{3} : 1\frac{2}{9} = \frac{22}{3} : \frac{11}{9} = \frac{22}{3} \cdot \frac{9}{11} = 2 \cdot 3 = 6;$

4) $4\frac{1}{11} : 2\frac{19}{22} = \frac{45}{11} : \frac{63}{22} = \frac{45}{11} \cdot \frac{22}{63} = \frac{5 \cdot 2}{1 \cdot 7} = \frac{10}{7} = 1\frac{3}{7}.$