解下列不等式:1.x-2<2(x-1),x/3≤4-x;2.2x-1<x+1,x+8<4x-1
问题描述:
解下列不等式:1.x-2<2(x-1),x/3≤4-x;2.2x-1<x+1,x+8<4x-1
答
x-2<2(x-1)
x-2<2x-2
-x<0
x>0
x/3≤4-x
x≤12-3x
4x≤12
x≤3
2x-1<x+1
x<2
x+8<4x-1
-3x<-9
x>3
答
x-2<2(x-1)
X-2