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18+3x=x+14
25-4x=12-5x
13x+27=16x+4.5
21x+45=17+14x
13x+70=2x+15
3.4x-4=4.8-x
2x+7=x+5.5
5-3x=2x-8
9.5x+2=5.7x-5.6
1.5x+8=3.1x+16
2.9x+7.4=x+1.7

18+3х=х+14
18-14=х-3х
4=-2х
х=-2:4
х=0.5

18+3х=х+14
3х-х=14-18
2х=-4
х=-2

25-4х=12-5х
-4х+5х=12-25
х=-13

13х+27=16х+4.5
-3х=-22.5
х=7.5

21х+45=17+14х
7х=-28
х=-4

13х+70=2х+15
11х=-55
х=-5

3.4х-4=4.8-х
4.4х=8.8
х=2

2х+7=х+5.5
х=-1.5

5-3х=2х-8
5х=13
х=2.6

9.5х+2=5.7х-5.6
3.8х=-7.6
х=-2

1.5х+8=3.1х+16
1.6х=-2
х=-1.25

2.9х+7.4=х+1.7
1.9х==-5.7
х=-3