2 × (3 × 4 - 5) - 4 × (7 × 3 + 4)
2 × (12 - 5) - 4 × (21 + 4)
2 × 7 - 4 × 25
14 - 100 = - 86
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2 × (3 × 4 - 5) - 4 × (7 × 3 + 4)
2 × (12 - 5) - 4 × (21 + 4)
2 × 7 - 4 × 25
14 - 100 = - 86