Решите уравнения
1. 15x-3=10x+12
2. -2x-25=-5x-7
3. 4(5-2y)=-5x-7
4. 3y+16=8y-9
5. 4x+(11,8-x)=3,8-5x
6. 3y+2 (2y-3)=8-7 (y-2)
7. 2-5x=x+14
8. 5 (y-7)=(y-4)-29
9. 11-5y=12-6y