Question

The common difference in an arithmetic sequence is –2 and the first term is 47. What is the 29th term?

Answer 1

\(\Large\color{teal}{ \rm a_1+d(n-1)=a_n }\)

Answer 2

In your case \(\Large\color{magenta}{ \bf 47+(-2)(29-1)=a_{29} }\)