\[\boxed{\text{110\ (110).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[\textbf{а)}\ \frac{12}{5x} \cdot \frac{x^{3}}{12a} = \frac{12 \cdot x^{3}\ }{5x \cdot 12a} = \frac{x^{2}}{5a}\]
\[\textbf{б)}\ \frac{8c^{2}}{15m} \cdot \frac{1}{4c^{2}} = \frac{8c^{2}}{15m \cdot 4c^{2}} =\]
\[= \frac{2}{15m}\]
\[\textbf{в)}\ \frac{11a^{4}}{6} \cdot \frac{12b}{a^{5}} = \frac{11a^{4} \cdot 12b}{6 \cdot a^{5}} =\]
\[= \frac{22b}{a}\]
\[\textbf{г)}\ \frac{{4n}^{2}}{3m^{2}} \cdot \frac{9m}{2} = \frac{4n^{2} \cdot 9m}{3m^{2} \cdot 2} = \frac{{6n}^{2}}{m}\]
\[\boxed{\text{110.\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\]
Пояснение.
Решение.
\[\textbf{а)}\ \frac{5}{3a} \cdot \frac{2b}{3} = \frac{2 \cdot 2b}{3a \cdot 3} = \frac{10b}{9a}\]
\[\textbf{б)}\ \frac{5a}{8y} \cdot \frac{7}{10} = \frac{5a \cdot 7}{8y \cdot 10} = \frac{7a}{16y}\]
\[\textbf{в)}\ \frac{b^{2}}{10} \cdot \frac{5}{b} = \frac{b^{2} \cdot 5}{10 \cdot b} = \frac{b}{2}\]
\[\textbf{г)}\ \frac{18}{c^{4}} \cdot \frac{c^{3}}{24} = \frac{18 \cdot c^{3}}{c^{4} \cdot 24} = \frac{3}{4c}\]