Question

Задача закреплена в скриншоте.

Answer 1

$\frac{15x+3}{5x-15}=0\\\left \{ {{15x+3=0;} \atop {5x-15\neq 0;}} \right. => \left \{ {{15x=-3;} \atop {5x\neq 15;}} \right. => \left \{ {{x=-0,2;} \atop {x\neq 3.}} \right. => x=-0,2$