5целых 1/3 : на 6 целых 2/5 + 3 целых 11/30

16/3 * 5/3 = 5/6
5/6 + 101/30 = 25/30 + 101/30 = 126/30 = 4,2

5 1/3 : 6 2/5 + 3 11/30 =4,2

1) 5 1/3 : 6 2/5 = 16/3 : 32/5 = 16/3 * 5/32 = 1/3* 5/2 = 5/6 

2) 5/6 + 3 11/30 = 25/30 + 3 11/30 = 3 (25+11)/30 = 3 36/30 = 3 6/5 = 4 1/5=4,2