괄호 안의 항을 2, 3, 4 항으로 설정하는 기능 추가

components/game/FeedbackPanel.tsx

@@ -23,10 +23,11 @@ export default function FeedbackPanel({
   onNext,
 }: FeedbackPanelProps) {
   const nextButtonRef = useRef<HTMLButtonElement>(null);
-  const signedTerms = [
-    problem.a,
-    problem.operator === "-" ? -problem.b : problem.b,
-  ] as const;
+  const signedTerms = problem.terms.map((term, index) => {
+    if (index === 0) return term;
+
+    return problem.operators[index - 1] === "-" ? -term : term;
+  });
   const feedbackItems = signedTerms.map((term, index) => ({
     formulaLatex: `${formatSignedNumber(
       problem.multiplier,