解不等式组 2(x-3)≤x-5 和 x+2/3-1

Question

解不等式组 2(x-3)≤x-5 和 x+2/3-1

Answer 1

2(x-3)≤x-5          x+2/3-1=2x-6≤x-5           =(x+2/3-1)x6=2x-6+5≤x          =6x+4-6<3x
=2x-x≤1              =6x-3x<2
=x≤1                   =x<2/3