Question

rezolvati in multimea numerelor negative inecuatia
$2 - x \geqslant 2(x - 2) - 3$

Answer 1

2 - x ≥ 2 (x - 2) - 3
2 - x ≥ 2x - 4 - 3 
2 + 4 + 3 ≥ 2x + x
9 ≥ 3x / : 3
3 ≥ x 
sau altfel scris
x ≤ 3 ⇒ x ∈ (-∞ ; 3]

Answer 2

Am atasat rezolvarea