{5x>2x-6 {5x-2x>-6 {3x>-6 {x>-2
{3x<12-3x {3x+3x<12 {6x<12 {x<2<br> \\\\\\\\\\\\\\\\\\\\\\\\\
---------- - 2----------- 2-----------
\\\\\\\\\\\\\\\\\\\\\\\\\\\
-2x∈(-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<br>\\\\\\\\\\\\\\\
----------- 1.25-------1⁵/₆----------
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
x≤1.25
x∈(-∞; 1,25]