3 = 1 1) = 12 – 3 – (3 × 4) – c) (3 × 4 (a × 9 – b) 3 sama c) = (a × Pengurangan hasilnya – (b × a terhadap 1 4 – 4 (4 – = 9 b. Perkalian 3 3 × 1)