(4a-3b)x>2b-a的解集为x<4/9
可知4a-3b<0
(4a-3b)x>2b-a
x<(2b-a)/(4a-3b)=4/9
得b/a=5/6即b=5a/6
把b=5a/6代入4a-3b<0得
4a-3•5a/6<0
得a<0
ax>b
x<b/a=5/6
ax>b的解集是x<5/6
(4a-3b)x>2b-a的解集为x<4/9
可知4a-3b<0
(4a-3b)x>2b-a
x<(2b-a)/(4a-3b)=4/9
得b/a=5/6即b=5a/6
把b=5a/6代入4a-3b<0得
4a-3•5a/6<0
得a<0
ax>b
x<b/a=5/6
ax>b的解集是x<5/6