6 – x ≥ 0 6 ≥ x 2x = 6 – x 3x = 6 x = 2

6 – x ≤ 0 6 ≤ x 2x = -(6 – x) 2x = -6 + x x = -6 nesplňuje podmínku 6 ≤ x

x = 2