1. A+3a-4(9-a)
2. 3c(5a+2n-1)
3. -2/3(5/6x-3)
4. 3(5x+9-4x)
5. 2(x-1)+5(x+9)
6. -3-5x-5y+8x+7y+8
7. 3c(5a+2b-1)
8. 3(x+9)-(x-6)