The given expression is:

$\frac{b}{2} + \frac{b}{2}$

To simplify this, notice that both terms have the same denominator. So, you can combine them:

$\frac{b}{2} + \frac{b}{2} = \frac{b + b}{2} = \frac{2b}{2}$

Now, simplify the fraction:

$\frac{2b}{2} = b$

Thus, the equivalent expression is simply b.

Explanation: Since the two terms have the same denominator, they can be combined by adding their numerators. This results in the expression $\frac{2b}{2}$, which simplifies to $b$.

Would you like further details or have any other questions?

Here are five related questions:

1. What happens if the denominators are not the same?
2. How would you handle a case like $\frac{b}{3} + \frac{b}{4}$?
3. How do you combine fractions with different variables?
4. Can you subtract two fractions like $\frac{b}{2} - \frac{b}{2}$? What is the result?
5. How can you generalize this process for combining more than two fractions?

Tip: Always check if terms in fractions have the same denominator before adding or subtracting them!