yo guys plz help me with this i need it for my homework

Answer: For a is 19/15 or 1 4/15
for b I have no clue
Step-by-step explanation: add 3/5 and 2/3
you will get 19/15. In mixed fraction is 1 4/15
Answer: A) 610 and B) 61/167
Step-by-step explanation:
A) 800 + 870 = 1670
2/3 of 870 = 580
3/5 of 800= 480
580 + 480 = 1060
1670 - 1060 = 610