The given equation is:Let’s check each option, 1) + and – 52–36÷9×3+5 52–4×3+5 52–12+5 57–12 45≠206 2) - and × 52+36÷9–3× 5 52+4–3×5 52+4–1 5 56–15 41≠206 3) × and + 52×36÷9+3–5 52×4+3–5 208+3–5 211–5 206 = 206 4) ÷ and × 52+36×9÷3–5 52+36×3–5 52+108–5 160–5 155≠206 Hence, by interchanging × and + the equation will be correct.