5целых 1/6+ 1 целая 2/3

5 1/6+1 2/3=5 1/6+1 4/6=6 5/6

5ц 1/6+ 1ц 2/3= (6 × 5 + 1):6+ (3 × 1+2):3 = 31/6 + 5/3 = 31/6+ (5 × 2) : (3 × 2)= 31/6 + 10/6 = 41/6 = (6 × 6+5):6 = 6ц 5/6.