{ 5x+15≤0, {x≤-3
{ x+5 ≥0 <=> {x≥-5
**>x
-5 -3
x∈[-5; -3]
x наименьшее = -5
х<=-3
х>=-5
[-5;-3]
х=-5
{ 5x+15≤0, {x≤-3
{ x+5 ≥0 <=> {x≥-5
**>x
-5 -3
x∈[-5; -3]
x наименьшее = -5
х<=-3
х>=-5
[-5;-3]
х=-5