1. The problem asks to evaluate the expression $2x - y$ given the values $x=9$ and $y=-14$. 2. The formula is simply the expression itself: $$2x - y$$ 3. Substitute the given values into the expression: $$2(9) - (-14)$$ 4. Simplify inside the parentheses: $$18 - (-14)$$ 5. Subtracting a negative is the same as adding a positive, so: $$18 + 14$$ 6. Add the numbers: $$32$$ 7. Therefore, the value of $2x - y$ when $x=9$ and $y=-14$ is $32$.