321 × 46 - 92 × 27 - 67 × 46 간편 연산

321 × 46 - 92 × 27 - 67 × 46 간편 연산

321 × 46 - 92 × 27 - 67 × 46
= 321 × 46 - 46 × 2 × 27 - 67 × 46
= 321 × 46 - 46 × 54 - 67 × 46
= 46 × (321 - 54 - 67)
= 46 × 200
= 9200