kamilakity -1.4x+8.4=28x+804
-1.4x-28x=0
-29.4x=0
x=0

1,04x-3064=-4.68x+3.51
1.04x+4.68x=3.51+3.64
5.72x=7.15
x=1.25

jekadva 1)
-1.4(x-6)=7(4x+1.2)
-1,4x+8,4=28x+8,4
-1,4x-28x=8,4-8,4
-29,4x=0
x=0
=====
2)
2.6(0,4x-1.4)=-3.9(1.2x-0.9)
1,04x-3,64=-4,68x+3,51
1,04x+4,68x=3,51+3,64
5,72x=7,15
x=7,15:5,72
x=1,25