2x+3<1 x<-1x>(x-3)/2 2x>x-3 x>-3∴-3∴整数解x=-2∵x=-2是方程2x-4=ax的根∴-4-4=-2a,解得a=4
2x+3<1 x<-1x>(x-3)/2 2x>x-3 x>-3∴-3∴整数解x=-2∵x=-2是方程2x-4=ax的根∴-4-4=-2a,解得a=4 嘿嘿