The equation provided is $P = q + r + s$, and you're asked to solve for $q$.

To isolate $q$, subtract $r + s$ from both sides:

$q = P - r - s$

So, the solution for $q$ is:

$q = P - r - s$

Would you like further explanation or examples related to this problem?

Here are some related questions:

1. How would you solve for $r$ instead of $q$?
2. What if the equation had a multiplication term, like $P = q \cdot r + s$?
3. Can you express $q$ if $P$ is a specific number, such as $P = 10$?
4. How does this equation change if there are more terms on the right-hand side, like $P = q + r + s + t$?
5. What happens if you replace $P$ with a function, like $f(x) = q + r + s$?

Tip: When solving for a variable, always move all other terms to the opposite side of the equation using inverse operations like addition or subtraction.