3x(2x-5+2x^2)=6х^2-15х+6х^3
-2a^2(3a+a^2-4)=8а^2-2а^4-6а^3
12(3y-1)-3(4y+2)=36у-12-12у-6=24у-18
2x+4(x-2)=5-4x
2х+4х+4х=5+8
10х=13
х=1,3
3x(2x-5+2x^2)=6х^2-15х+6х^3
-2a^2(3a+a^2-4)=8а^2-2а^4-6а^3
12(3y-1)-3(4y+2)=36у-12-12у-6=24у-18
2x+4(x-2)=5-4x
2х+4х+4х=5+8
10х=13
х=1,3