由x>3m-2,及x<1-m无解,当3m-2≥1-m,即m≥3/4时,不等式组的解集是空集,∴m≥3/4.
x>3m-2 ,x<1-m1-m>x>3m-21-m>3m-2m<3/2
3m-2>=1-mm>=3/4