Vă rog ajutor!!!!am nevoie urgent
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Răspuns:
[(1/15 - 1/18) : 1/45 + 1/60 : (1/12 - 1/15)] : 1 1/2 = [(1/15 - 1/18) : 1/45 + 1/60 : (1/12 - 1/15)] : (1 × 2 + 1)/2 = [(1/15 - 1/18) : 1/45 + 1/60 : (1/12 - 1/15)] : (2 + 1)/2 = (1/90 × 45 + 1/60 : 1/60) : 3/2 = (1/2 + 1) : 3/2 = 3/2 : 3/2 = 1
Explicație pas cu pas: