Question

(2х-0,1)+(3х-5)=7
(х-0,2)+(4х-3)=8
(х+0,5)-(2х-3)=9

Answer 1

(2х-0,1)+(3х-5)=7
2х-0.1+3х-5=7
5х=7+0.1+5
5х=12.1
х=12.1:5
х=2.42

(х-0,2)+(4х-3)=8
х-0.2+4х-3=8
5х=8+0.2+3
5х=11.1
х=11.2:5
х=2.24

(х+0,5)-(2х-3)=9
х+0.5-2х+3=9
-х=9-0.5-3
-х=5.5
х=-5.5

Answer 2

(2х-0,1)+(3х-5)=7                     
 (х-0,2)+(4х-3)=8                        2х-0,1+3х-5=7                                   
2х+3х=0,1+7                            2х+3х-0,1-5=7
5х=7,1                                      5х-5,1=7
х=7,1: 5                                      5х=7+5,1
х=1,42                                         5х=12,1
                                                    х=12,1:5
                                                     х=2,42