Which pair of expressions are equivalent?

3v + 5 - 9v + 2 and negative 6v + 6

Negative 6n + 3 - 2n + 2 and negative 8 n + 6

Negative 4n + 8 + 9n - 2 and 5n + 6

10n - 5 - 2n + 3 and 5n - 2

whoever answers this gets 50pts pls hurry!!!!!!!!