1-x + 2x + 3 ≥ x 3 x≥7/2 x≤7/2 x≤2/7 x≥2/7 5 3 1 ≤ 7-x + 4x + 2 x≥-1/5 x≥1/5 x≥-5 x≥5 9 6 3-x - 5x+2 < - 8x+1 3 x<3/10 x>10/3 x>3/10 x>10/3 2 4 2x-3 ≥ 3 - 5x-3 5 x≥13/3 x≥-13/3 x≥-3/13 x≥3/13 10 3(4+x) - 5 > 2 x>17/12 x>12/17 x<17/12 x<12/17 5 4 4x-3 + 5(3-x) ≤1 3 x≥-1 x≤-1 x≤1 x≥1 6 4 - 1(x+3) ≥ x-4 9 x≤-12/31 x≤12/31 x≤31/12 x≤-31/12 2 6 x ≤ 3(-2x+3) - 5(1-x) x≥22/7 x≥7/22 x≤7/22 x≤22/7 8 6 |