9:25 PM 45.7 Vo 4G 49 LTE 금 І в. Пв. І в. 9: 11 16 35 (祭): (): ():(-16) 32:6-004) -号:13 7:(-50) -4:9 88 Поделиться

І в.

• \(-\frac{7}{9} : \frac{2}{3} = -\frac{7}{9} \cdot \frac{3}{2} = -\frac{7 \cdot 3}{9 \cdot 2} = -\frac{7 \cdot 1}{3 \cdot 2} = -\frac{7}{6} = -1\frac{1}{6}\)

• \(-\frac{3}{13} : (-\frac{9}{26}) = \frac{3}{13} \cdot \frac{26}{9} = \frac{3 \cdot 26}{13 \cdot 9} = \frac{1 \cdot 2}{1 \cdot 3} = \frac{2}{3}\)

• \(\frac{4}{5} : (-16) = \frac{4}{5} \cdot (-\frac{1}{16}) = -\frac{4 \cdot 1}{5 \cdot 16} = -\frac{1 \cdot 1}{5 \cdot 4} = -\frac{1}{20}\)

• \(-7{,}2 : (-0{,}04) = 7{,}2 : 0{,}04 = 720 : 4 = 180\)

• \(-4 : 9 = -\frac{4}{9}\)

ІІ в.

• \(-9 : \frac{9}{11} = -9 \cdot \frac{11}{9} = -\frac{9 \cdot 11}{9} = -11\)

• \(\frac{16}{35} : (-\frac{4}{25}) = \frac{16}{35} \cdot (-\frac{25}{4}) = -\frac{16 \cdot 25}{35 \cdot 4} = -\frac{4 \cdot 5}{7 \cdot 1} = -\frac{20}{7} = -2 \frac{6}{7}\)

• \(4{,}2 : (-7) = -4{,}2 : 7 = -0{,}6\)

• \(-\frac{4}{5} : 1\frac{3}{5} = -\frac{4}{5} : \frac{8}{5} = -\frac{4}{5} \cdot \frac{5}{8} = -\frac{4 \cdot 5}{5 \cdot 8} = -\frac{1 \cdot 1}{1 \cdot 2} = -\frac{1}{2}\)

• \(7 : (-50) = -7 : 50 = -0{,}14\)

Ответ: смотри выше