2 – x ≥ 0
-x ≥ -2
x ≤ 2
2x – 7= 2 – x
3x = 9
x = 3
nesplňuje podmínku x ≤ 2
2 – x ≤ 0
-x ≤ -2
x ≥ 2
2x – 7 = -(2 – x)
2x – 7 = -2 + x
x = 5