Question
Solution
18 ÷ 17 × 51 + ? × 55 = (42)2 + 50 54 + ? × 55 = 1764 + 50 54 + ? × 55 = 1814 ? × 55 = 1814 - 54 ? × 55 = 1760 ? = 1760 ÷ 55 ? = 32
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