It appears that the problem 5+2(n+1) = 2n, has not been setup correctly, because on the left side 5+2(n+1) is 2n+7, which cannot be equal to 2n on the right side except when n =0

It appears that the problem 5+2(n+1) = 2n, has not been setup correctly, because on the left side 5+2(n+1) is 2n+7, which cannot be equal to 2n on the right side except when n =0.

*****