si la asta daca se poate multumesc
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Răspuns:
a = (2/3 + 3/4 × 5/6) : 31/12 = (2/3 + 1/4 × 5/2) × 12/31 = (2/3 + 5/8) × 12/31 = 31/24 × 12/31 = 1/2
Explicație pas cu pas: