Question

система 3x+7 <6x+16 2x+4 <15+4x

Answer 1

{3x+7<6x+16
{2x+4<15+4x

{3x-6x<16-7
{2x-4x<15-4

{-3x<9
{-2x<11

{-x< 3
{-x < 5,5

{x> -3
{x> -5,5

x> -3
или х∈(-3;+∞)