Which equation is an identity?

5y + 5 = 5y – 6

8 – (6v + 7) = –6v – 1

3w + 8 – w = 4w – 2(w – 4)

6m – 6 = 7m + 9 – m

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?