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2x-4x<5-1
-2x<4|:(-2)
x>-2
b)6-x>2x
-x-2x>-6
-3x>-6|:(-3)
x<2
c)2(x-3)≤4
2x-6≤4
2x≤4+6
2x≤10|:2
x≤5
d)1/2(3x+5)>2
1,5x+2,5>2
1,5x>2-2,5
1,5x>-0,5|:1,5
x>-0,33
e)2(x+1)<4x
2x+2<4x
2x-4x<-2
-2x<-2|:(-2)
x>1