5 1/3 : 6 2/5 + (12:3 3/5 + 2/3) × 2/3 =
= (5×3+1)/3:(6×5+2)/5 + (12:18/5+2/3)×2/3=
= 16/3 : 32/5 + (12 × 5/18 + 2/3) × 2/3 =
= 16/3 × 5/32 + (60/18 + 2/3) × 2/3 =
= 80/96 + (60+12)/18 × 2/3 =
= 40/48 + 72/18 × 2/3 =
= 10/12 + 24/9 =
= 5/6 + 8/3 =
= (5 + 2×8)/6 =
= 21/6 =
= 7/2
= 3 intregi 1/2
