Question

Правильно ли я решил?

Answer 1

$\left \{ {{\frac{1}{3}x>-60 } \atop {4,2x-10>4,7x+5}} \right.\\\\\left \{ {{x>-180} \atop {4,2x-4,7x>5+10}} \right.\\\\\left \{ {{x>-180} \atop {-0,5x>15}} \right.\\\\\left \{ {{x>-180} \atop {x<-30}} \right. \\\\Otvet:\boxed{x\in(-180;-30)}$