Оцените это ГДЗ

Оценить: 100% - 1 голосов
100%

Общая оценка

номер 60 гдз 8 класс алгебра Муравин Муравина

1)\begin{equation}\frac{28a^{2}b^{7}}{27x^{3}}\cdot \frac{-81x^{4}}{140ab^{6}}= \end{equation} \begin{equation}=-\frac{28a^{2}b^{7}\cdot 81\cdot x^{4}}{27x^{3}\cdot 140ab^{6}}=-\frac{3abx}{5} \end{equation} 2)\begin{equation}\frac{54x^{4}y^{7}}{77a^{5}}\cdot \frac{22\left ( ax \right )^{5}}{\left ( -3y^{2} \right )^{3}}= \end{equation} \begin{equation}=\frac{54x^{4}y^{7}\cdot 22a^{5}x^{5}}{-77a^{5}\cdot 27y^{6}}=-\frac{4x^{9}y}{7} \end{equation} 3)\begin{equation}\frac{65\left ( a^{3}b^{2} \right )^{2}}{44c^{8}}:\frac{52a^{3}b^{2}}{33\left ( c^{4} \right )^{3}}=\end{equation} \begin{equation}=\frac{65a^{6}b^{4}\cdot 33c^{12}}{44c^{8}\cdot 52a^{3}b^{2}}=\frac{15a^{3}b^{2}c^{4}}{16} \end{equation} 4)\begin{equation}\frac{69x^{4}y}{88z^{5}}:\frac{46x^{3}y}{55z^{5}}= \end{equation} \begin{equation}=\frac{69x^{4}y\cdot 55z^{5}}{88z^{5}\cdot 46x^{3}y}=\frac{15x}{16} \end{equation} 5)\begin{equation}\frac{6k^{2}n^{2}}{35p^{4}}\cdot \frac{49n^{4}}{k^{6}p^{3}}\cdot \frac{5k^{4}p^{7}}{42p^{6}} \end{equation} \begin{equation}\frac{6k^{2}n^{2}\cdot 49n^{4}\cdot 5k^{4}p^{7}}{35p^{4}\cdot k^{6}p^{3}\cdot 42n^{6}}=1 \end{equation} 6)\begin{equation}\frac{39x^{4}z^{3}}{40y^{5}}\cdot \frac{16y^{2}z^{4}}{27x^{7}}\cdot \frac{9x^{3}y^{3}}{65z^{7}} \end{equation} \begin{equation}\frac{39x^{4}z^{3}\cdot 16y^{2}z^{4}\cdot 9x^{3}y^{3}}{40y^{5}\cdot 27x^{7}\cdot 65z^{7}}=\frac{2}{25} \end{equation} 7)\begin{equation}\frac{33b^{8}}{111a^{8}}:\frac{99b^{4}}{74a^{2}}:\frac{4b^{2}}{27a^{6}} \end{equation} \begin{equation}\frac{33b^{8}\cdot 74a^{2}\cdot 27a^{6}}{111a^{8}\cdot 99b^{4}\cdot 4b^{2}}=\frac{3}{2}b^{2} \end{equation} 8)\begin{equation}\frac{52y^{6}}{84x^{10}}:\frac{39y^{3}}{102x^{2}}:-\frac{34y^{2}}{45x^{9}} \end{equation} \begin{equation}\frac{52y^{6}\cdot 102x^{2}\cdot 45x^{9}}{84x^{10}\cdot 39y^{3}\cdot 34y^{2}}=\frac{5}{7}yx \end{equation}