<span>6(-3r)=-39+3r
-18r = -39+3r
39 = 18r + 3r
39 = 21r
39/21 = r
13/7 = r
r = 13/7</span>
Answer:
answer of your question is
-x= -7
N= - 31 over 19
alternative form
n= -1 12 over19 , n ~ - 1.63158
N= x+4 ( x being the value before n in the sequence)
