Pliss kak bantuin aku :(

1.5x-4<21
5x<21+4
5x<25
x<25:5
x<5

2.6x+8>44
6x>44-8
6x>36
6x>36:6
x>6

3.4(x+1)>2x-3
4x+4>2x-3
4x-2x>3-4
2x>-1
x= -1/2

4.3(2x-4)<4x-8
6x-12<4x-8
6x-4x<-8+12
2x<4
x<4:2
x<2

5.-3n<2n-5
-3n-2n<-5
-5n<-5
n>-5:-5
n> 1