Find the first term and the common difference calculator

All you need to do is plug the given values into the formula t_n = a + (n - 1) d and solve for n, which is the number of terms. Note that t_n is the last number in the sequence, a is the first term in the sequence, and d is the common difference.

In general, the nth term of an arithmetic progression, with first term a and common difference d, is: a + (n - 1)d .