Bonjour,
Résoudre chaque inéquation:
A: x + 1 < 3 - 2x
A: x+2x < 3-1
A: 3x < 2
A: x < 2/3 S= ] -∞;2/3[
B: - x + 12 ≤ x + 14
B: -x-x ≤ 14-12
B: -2x ≤ 2
B: x ≥ -2/2
B: x ≥ -1 S= [-1; +∞[
C: 5x - 4 ≥ 2x + 11
C: 5x-2x ≥ 11+4
C: 3x ≥ 15
C: x ≥ 5 S= [5; +∞[
D: - 7x + 6 ≥ 3x
D: -7x-3x ≥ -6
D: -10x ≥ -6
D: x ≤ -6/-10
D: x ≤ 3/5 S= ]-∞; 3/5]