Simplify:

1) 5(y + 1) + 5(y – 1)

2) 4z – 7(3z – 4)

3) 6(6k + 7) – 7k

4) 2(4p – 3) + (p + 7)

5) 6s – (3s – 2)

6) -4(w + 1) + 5w

7) -10(t – 8) – 7t

8) 3(3t – 2) – 2(t + 1)

9) -(n + 2) + 3(n – 2)

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