Question Summary:
Can you combine fasting for kafaarat for 3 days and days to make up for Ramadan of 5 days or do you have to fast the full 8 days?

Question Detail:

Can you combine fasting for kafaarat for 3 days and days to make up for Ramadan of 5 days or do you have to fast the full 8 days ?

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykumwa-rahmatullāhiwa-barakātuh.
It will not be permissible for you to integrate the 3 fasting days of Kaffarah with the 5 qadha days of Ramadan. You will have to fast all 8 days separately. (1) 
And Allah Ta’āla Knows Best
Zakir Husain
Student DarulIftaa
Michigan, U.S.A
Checked and Approved by,
Mufti Ebrahim Desai.
إذا اجتمع أمران من جنس واحد ولم يختلف مقصودهما دخل أحدهما في الآخر غالبا (1)
الأشباه والنظائر،إدارة القرآن ج١ص٣٤٦))