y=-4
Объяснение:
15y+2(6-2y)=6y-8
15y+12-4y=6y-8
15y-4y-6y=-8-12
5y=-20
y=-20/5
- 4.
15y + 2(6 - 2y) = 6y - 8
15y + 12 - 4y = 6y - 8
15y - 4y - 6y = - 8 - 12
5y = - 20
y = - 20 : 5
у = - 4
