katysha052010 1)-4,1х-2,5-2,3х-3,9=1,6х
-4,1х-2,3х-1,6х=3,9+2,5
-8х=6,4
х=-0,8
2)3,6х+2,5-1,8х-2,3=1,6х
3,6х-1,8х-1,6х=2,3+2,5
0,2х=4,8
х=24

Эрвена -(4.1х+2.5)-(2.3+3.9)=1.6х
-4.1х-2.5-2.3х-3.9=1.6х
-8х=6.4
х=-0.8

(3.6х+2.5)-(1.8х+2.3)=1.6х
3.6х+2.5-1.8х-2.3=1.6х
3.6х-1.8х-1.6х=2.3 - 2.5
0.2х= -0.2
х= -1