ГДЗ по математике 5 класс Мерзляк Задание 691

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\[1)\ 42\ :\frac{1}{2} = 42 \cdot 2 = 84\]

\[2)\ 42\ :\frac{1}{5} = 42 \cdot 5 = 210\]

\[3)\ 42\ :\frac{2}{3} = 42 \cdot \frac{3}{2} = 42\ :2 \cdot 3 =\]

\[= 21 \cdot 3 = 63\]

\[4)\ 42\ :\frac{3}{7} = 42 \cdot \frac{7}{3} = 42\ :3 \cdot 7 =\]

\[= 14 \cdot 7 = 98\]

\[5)\ 42\ :\frac{7}{11} = 42 \cdot \frac{11}{7} =\]

\[= 42\ :7 \cdot 11 = 6 \cdot 11 = 66\]

\[6)\ 42\ :\frac{21}{23} = 42 \cdot \frac{23}{21} =\]

\[= 42\ :21 \cdot 23 = 2 \cdot 23 = 46\]