1) 4/7 de 28 = 4/7 × 28 = (4×28)/7 = 112/7 = 16
2) 92/4 = 23
3) 2/9 de 1/4 de 54 = 2/9 × 1/4 × 54 = (2×1×54)/(9×4) = 108/36 = 3
4) 5 × (90/2) = 5 × 45 = 225
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1) 4/7 de 28 = 4/7 × 28 = (4×28)/7 = 112/7 = 16
2) 92/4 = 23
3) 2/9 de 1/4 de 54 = 2/9 × 1/4 × 54 = (2×1×54)/(9×4) = 108/36 = 3
4) 5 × (90/2) = 5 × 45 = 225