5 per 6 + 17 per 3 – 2% x 0,6

5/6 + 17/3 – 2/100 x 6/10
= 5/6 + 17/3 – 1/50 x 3/5
= 5/6 + 17/3 – 3/250
= 625/750 + 4250/750 – 9/750
= 4866/750
= 1622/250
= 811/125
= 6. 66/125