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5(x-1)< x+3
5x-5<x+3
5x-x<3+5
4x<8 |:4
x=2
2;1,5;0,5;0
zad.2
2(4x-5)=2
8x-10=2
8x=2+10
8x=12 |:8
x=1,5
3(2x+1) < x-2
6x+3<x-2
6x<-2 -3
6x< -5 |:6
x=-0,8
zad.3
1 l.-x
2 l.-4x
3 l.-x -8
x+4x+x-8=28
6x=28+8
6x=36 |:6
x=6
1 l.=6
2 l.-6 * 4=24
3 l.- 6-8 = -2
odp.:te liczby to 6, 24 i -2.