simplify: 1. 5g-2(g-7)
2. 32n-3(n-7)
3. 12p-2(p-4)
4. 4(3e-2)-3e
5. -5t(t-3)
6. 8w-1/3(12w-30)
7. -4(3-b)+2(3b+2)-7(b+2)