MHB Find the 79th term in the sequence

[karush]

Find the 79th term in the sequence - 7, - 4, - 1
$$a_n=a_1+\left(a_n-1 \right)d$$
$$n=79,\ \ a_1=-7, \ \ d=-3$$
$$a_{79}=-7+\left(79-1\right)\left(3\right)=227$$

I just followed an example?

 

[kaliprasad]

Find the 79th term in the sequence - 7, - 4, - 1
$$a_n=a_1+\left(a_n-1 \right)d$$
$$n=79,\ \ a_1=-7, \ \ d=-3$$
$$a_{79}=-7+\left(79-1\right)\left(3\right)=227$$

I just followed an example?

There is a typo
$a_n=a_1+\left(n-1 \right)d$

rest is OK

 

[karush]

Gotcha