Which equation is an identity?
A6m - 6 = 7m + 9 - m
B3w + 8 - w = 4w - 2(w - 4)
C8 - (6v + 7) = -6v - 1
D5y+5 = 5y-6
A6m - 6 = 7m + 9 - m
B3w + 8 - w = 4w - 2(w - 4)
C8 - (6v + 7) = -6v - 1
D5y+5 = 5y-6