ГДЗ по математике 6 класс Мерзляк Задание 582

\[\boxed{\mathbf{582\ (582).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ да:\]

\[16\ :4 = 4\]

\[0,8\ :0,2 = 8\ :2 = 4\]

\[4 = 4.\]

\[2)\ нет:\]

\[\frac{34}{85} = \frac{2}{5}\]

\[\frac{27}{45} = \frac{3}{5}\]

\[\frac{2}{5} \neq \frac{3}{5}.\]

\[3)\ нет:\]

\[0,3\ :0,06 = 30\ :6 = 5\]

\[1\frac{1}{7}\ :\frac{4}{21} = \frac{8}{7} \cdot \frac{21}{4} = 2 \cdot 3 = 6\]

\[5 \neq 6.\]

\[4)\ да:\]

\[\frac{4,2}{0,7} = \frac{42}{7} = 6\]

\[\frac{9}{1,5} = \frac{90}{15} = 6\]

\[6 = 6.\]