1>1.5(4-2x)+0.5(2-4x)
1>1.5(4-2x)+0.5(2-4x) 1>1,5*4-1,5*2x+0,5*2-0,5*4x 1>6-3x+1-2x 1>7-5x 5x>6 x>6/5 xє(6/5:+∞)