Задача 47568 ...

milaev777

2020-04-19 18:14:17

3. Решите систему неравенств
{2(x - 8) ≤ -3x + 7,
{5x - 8 > 8(x - 2).

sova

2020-04-19 18:37:51

{2x-16 ≤ -3x+7
{5x-8 > 8x-16

{2x+3x ≤ 7+16
{5x-8x > -16+8

{5 ≤ 23
{-3x> -8

{x ≤ 4,6
{x<8/3

О т в е т. {- ∞ ;8/3)