Calculate the following: (9 + 1) × (5 – 2) and (8 + 4) ÷ (5 – 1)
(9 + 1) × (5 – 2) = 10 × 3 = 30
(8 + 4) ÷ (5 – 1) = 12 ÷ 4 = 3
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