Solve for n.
n + 1 = 4(n - 8)
n = 1
T
n = 8
n = 11
n = 16

N= 11

question:
n+1= 4(n-8)

first step: distribute 4 through the parenthesis:
n+1= 4n-32

next step: move the variable to the left hand side and change the sign:
n-4n+1= -32

next step: collect the like terms:
-3n= -32-1

last step: divide both sides by -3:
-3n= -33

solution: n= 11