* 3x+5<2
3x<2-5
3x< -3
x< -1
alternativement = { x|x < -1}
* -2x+4≥ -6
-2x≥ -6-4
-2x≥ -10
x≤ 5
alternativement = {x|x ≤ 5}
* 5x+4< 7x-3
5x-7x> -3-4
-2x> -7
x> 7/2
alternativement = {x|x > 7/2}
*-3x-1/5≤4
-3x-1≤ 20
-3x≤ 20+1
-3x≤21
x≥ -7
alternativement = {x|x ≥ -7}
