Find the sum of the following series.

Question

14/n-=1 (2n+1)

Answer 1

I don't see a series. I do see a -= which I cannot decode.

And what does 1 (2n+1) mean?

Use ^ for exponents, as in 2^n or (-1)^(n-1)

Use parentheses if needed

1/n+2 is not the same as 1/(n+2)