Correct Perform the indicated operation by removing the parentheses and combining like terms. \[ \left(-x^{2}+8 x-3\right)-(3 x-7) \]

Step 1 ：Distribute the negative sign to each term inside the second parentheses. This will change the sign of each term inside the parentheses.

Step 2 ：Combine like terms. We can combine the terms with \(x\) and the constant terms.

Step 3 ：The final expression is \(-x^{2} + 5x + 4\).

Step 4 ：\(\boxed{-x^{2} + 5x + 4}\) is the final answer.