a)2(x+1)-3(4x+5) ≤ -(x-2) 2x+2-12x-15≤-x+2 2x-12x+x≤2-2+15 9x≤15/9 x≤15/19 x≤1 6/9=1 2/3 b)3x-2(x-2) ≥ 3(x-4)-2(2-3x) 3x-2x+4≥3x-12-4+6x 3x-2x-3x-6x=-12-4-4 -8x=-20/-8 x=-20/-8 x=2 4/8=2 1/2
a) 2(x + 1) - 3(4x + 5) ≤ -(x - 2) 2x + 2 - 12x - 15 ≤ 2 - x -10x + x ≤ 2 + 13 -9x ≤ 15 x ≥ -1⅔ b) 3x - 2(x - 2) ≥ 3(x - 4) - 2(2 - 3x) 3x - 2x + 4 ≥ 3x - 12 - 4 + 6x x - 9x ≥ -16 - 4 -8x ≥ -20 x ≤ 2½
a)2(x+1)-3(4x+5) ≤ -(x-2) 2x + 2 - 12x - 15 ≤ -x + 2 2x- 12x + x ≤ 2 + 15 - 2 -9x ≤ 15 /: (-9) x ≥ 15/9 x ≥ 1 i 2/3 b)3x-2(x-2) ≥ 3(x-4)-2(2-3x) 3x - 2x +4 ≥ 3x - 12 - 4 +6x 3x - 2x - 3x - 6x ≥ - 12 - 4 - 4 -8x ≥ - 20 /: (-8) x ≤ 20/8 x ≤ 2 i 1/2
