Question

已知不等式2分之x-1大于x与ax-6大于5x通解,责a=?

Answer 1

（x-1）/2 > x,(x-1)/2 - x > 0,(x-1-2x)/2 >0,-x-1 >0

ax-6 > 5x,(a-5)x-6 > 0,(a-5)x/6 -1 > 0

-x-1 >0与(a-5)x/6 -1 > 0通解,所以(a-5)/6=-1,a-5=-6,a=-1

a=-1