6/5 x + 150=0
6/5 x =-150
x =-150*5/6
х=-125
(x-1)/3 + (x+1)/2=6
((x-1)*2 + (x+1)*3)/6=6
(x-1)*2 + (x+1)*3=36
2х-2+3х+3=36
5х=36-3+2
5х=35
х=7
2z^2-(2z-5)(z-1)=9
2z^2-2z^2+2z+5z-5=9
7z=9+5
z=2
6/5 x + 150=0
6/5 x =-150
x =-150*5/6
х=-125
(x-1)/3 + (x+1)/2=6
((x-1)*2 + (x+1)*3)/6=6
(x-1)*2 + (x+1)*3=36
2х-2+3х+3=36
5х=36-3+2
5х=35
х=7
2z^2-(2z-5)(z-1)=9
2z^2-2z^2+2z+5z-5=9
7z=9+5
z=2