1.x+3 > 4
问题描述:
1.x+3 > 4
x/2 2.x-3(x-2) ≤ 4
1-2x/4 > 2-x
3.2(x-1) ≥ 3x+1
x/3 4.3x+1>5x+4
1/3x≤ x-2/3
答
1.x+3 > 4 x>1x/2 2-x 4-2x>8-4x -2x+4x>8-4 2x>4 x>2∴x>23.2(x-1) ≥ 3x+1 2x-2≥3x+1 2x-3x≥1+2 -x≥3 x≤-3x/3