ГДЗ по математике 5 класс Мерзляк Задание 692

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\[1)\ 90\ :\frac{1}{9} = 90 \cdot 9 = 810\]

\[2)\ 90\ :\frac{2}{5} = 90 \cdot \frac{5}{2} = 90\ :2 \cdot 5 =\]

\[= 45 \cdot 5 = 225\]

\[3)\ 90\ :\frac{2}{9} = 90 \cdot \frac{9}{2} = 90\ :2 \cdot 9 =\]

\[= 45 \cdot 9 = 405\]

\[4)\ 90\ :\frac{3}{10} = 90 \cdot \frac{10}{3} =\]

\[= 90 \cdot 10\ :3 = 900\ :3 = 300\]

\[5)\ 90\ :\frac{5}{6} = 90 \cdot \frac{6}{5} = 90\ :5 \cdot 6 =\]

\[= 18 \cdot 6 = 108\]

\[6)\ 90\ :\frac{18}{19} = 90 \cdot \frac{19}{18} =\]

\[= 90\ :18 \cdot 19 = 5 \cdot 9 = 95\]