To isolate $y$ in the equation $2x + 5y - 10 = 5$, follow these steps:

1. Move the constant term to the other side of the equation:

   $2x + 5y = 5 + 10$

   $2x + 5y = 15$

2. Move the term involving $x$ to the other side:

   $5y = 15 - 2x$

3. Divide by 5 to solve for $y$:

   $y = \frac{15 - 2x}{5}$

4. Simplify the equation:

   $y = 3 - \frac{2x}{5}$

So, the isolated form of $y$ is:

$y = 3 - \frac{2x}{5}$

Would you like more details or have any questions?

Here are 5 related questions:

1. How do you isolate $y$ when there are more terms?
2. What happens if you need to isolate $x$ instead of $y$?
3. Can you explain how to handle equations with fractions?
4. How do you check if your isolated $y$ equation is correct?
5. What are the steps for isolating $y$ in a quadratic equation?

Tip: When isolating a variable, always perform inverse operations to move terms step by step.