1. The problem is to isolate and simplify the second term from a given expression containing three terms. 2. Let's assume the expression is $a + b + c$, where $a$ is the first term, $b$ is the second term, and $c$ is the third term. 3. To isolate the second term $b$, we simply focus on it and ignore the other terms $a$ and $c$. 4. If the terms are part of a sum or equation, the second term $b$ is already isolated as it is. 5. If the second term involves coefficients or variables, write it explicitly as it appears. 6. Without a specific expression, the second term alone is $b$. 7. Therefore, the isolated second term is $b$.