Evaluate

Let I =




[]




I = 4× (16 – 1)/4 – 5 × (8 – 1)/3 + 6 × (4 – 1)/3 + 9 × 1


I = 15 – 5 × 7/3 + 2 × 3 + 9


I = 15 – 35/3 + 6 + 9


I = 30 – 35/3 = (90 – 35)/3


I = 65/3



4