To simplify the expression 3+2q+6-q, we have to combine like terms, we do this by combining the terms that are multiplied by the same variable (y) and the terms that are not being multiplied by any variable, we can do it, like this:
3+2q+6-q = (3 + 6) + (2q - q) = (9) + (q) = 9 + q
Then, the answer is 9 + q