9x^-6x+1=0
(3х-1)^2=0
3x-1=0
3x=1
x=1/3
x=0.3
5(7х-2)-3(9х+6)=3х-6
35х-10-27х-18=3х-6
35х-27х-3х=10+18-6
5х=22
х=22:5
х=4,4