Question

Помогите с заданием пж

Answer 1

1)   $\frac{18c^4}{7d}:(-9c^2d)=\frac{18c^4}{7d}*(-\frac{1}{9c^2d})=-\frac{18c^4}{7d*9c^2d}=-\frac{2c^2}{7d^2}$

2) $\frac{14}{9x^3}:\frac{7x}{2y^2} =\frac{14}{9x^3}*\frac{2y^2}{7x}=\frac{14*2y^2}{9x^3*7x}=\frac{4y^2}{9x^4}$

3)  $\frac{3x}{10a^3}:\frac{1}{5a^2}= \frac{3x}{10a^3}*\frac{5a^2}{1}= \frac{3x*5a^2}{10a^3*1}=\frac{3x}{2a}$

4) $27a^3*\frac{a^2}{b}:\frac{18a^4}{7b^2}=\frac{27a^3a^2}{b}*\frac{7b^2}{18a^4}=\frac{27a^5*7b^2}{b*18a^4}=\frac{21ab}{2}$