5x + 11 ≥ -9 subtract 11 to both sides
5x ≥ -20 divide both sides by 5
x ≥ -4
10x - 3 ≤ 27 add 3 to both sides
10x ≤ 30 divide both sides by 10
x ≤ 3
l 3x + 1 l = 1
We have two equations
3x + 1 = 1 3x + 1 = -1
subtract 1 from both sides
3x = 0 3x = - 2
divide both sides by 3
x = 0 x = -2 / 3