Bonsoir,
6x -10x -5 ≥ 3x +6 -6x -6
6x-10x -3x +6x ≥ 6-6+5
7x ≥ 5
x≥5/7
10 -8x +4x +12 ≤-2x
10 +12 ≤-2x +8x -4x
22 ≤ 2x
x ≥22/2
x ≥ 11
