Ответы на вопрос:
{5x> 2x-6 {5x-2x> -6 {3x> -6 {x> -2 {3x< 12-3x {3x+3x< 12 {6x< 12 {x< 2 \\\\\\\\\\\\\\\\\\\\\\\\\ - \\\\\\\\\\\\\\\\\\\\\\\\\\\ -2< x< 2 x∈(-2; 2) {x+2-3(x-1)≥2x {x+2-3x+3≥2x {-2x-2x≥-5 {-4x≥-5 {x≤1.25 {5x+4< 12-(x-3) {5x+4< 12-x+3 {5x+x< 15-4 {6x< 11 {x< 1⁵/₆ \\\\\\\\\\\\\\\ 1.25 ⁵/₆ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\ x≤1.25 x∈(-∞; 1,25]
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