Ответ:\(\frac14x=-3\Rightarrow x=-12\).\(-0.02x=-3\Rightarrow x=150\).\(-\frac35x=5\Rightarrow x=-\frac{25}{3}=-8\frac13\).\(x:\frac14=-5\Rightarrow x=-5\cdot\frac14=-\frac54\).\(0.005x=-0.1\Rightarrow x=-20\).