Odpowiedź:
Szczegółowe wyjaśnienie:
b)
(2x - 3)/4 < 5 /•4 to 2x - 3 < 5•4 to 2x < 20 + 3 to 2x < 23 /:2
to x < 23/2 to x < 22/2 + 1/2 to x < 11 + 1/2 to x < 11½ to
to x ∈ (− ∞, 11½)
////////////////////////////////////⎪11½
--------↑-----↑----↑----↑----↑-o----------------> x
.........-10....-5.....0......5....10⎪11½
b)
(1 - 2x)/2 ≥ 1/3 /•2 to 1 - 2x ≥ 2/3 to - 2x ≥ 2/3 - 1 to
- 2x ≥ 2/3 - 3/3 to - 2x ≥ - 1/3 /:(-2) to x ≤ 1/6 to
x ∈ (− ∞, 1/6⟩
///////////////////////////////////⎪1/6
--------↑-----↑----↑----↑----↑-•----------------> x
.........-4....-3.....-2.....-1.....0.⎪1/6
