Answer: a = (2S)/(n + l)
Explanation:
a = (2S)/(n + l)
In this equation, 'a' is the subject, which means that it is the value being solved for. To solve for 'a', we can divide both sides by the denominator of the fraction on the right-hand side (n + l). This leaves us with the answer of a = (2S)/(n + l).