Help sequence a1= -5 4th term

Question

_{find the 4th term for recursive sequence}

^a₁ = -5

a_n = a_n-1-1

Answer 1

a₁ = - 5

a₂ = a₁ - 1 = - 5 - 1 = -6

a₃ = a₂ - 1 = -6 - 1 = -7

Can you determine a₄?