Question

Jeffrey used 5 9 of his bag of sugar to make some cookies and 3 9 of his bag of sugar to make brownies. How much of his bag of sugar did Jeffrey use in all?

Answer 1

He Used 8/9 Of This Bag Of Sugar Which Leaves Him With 1/9 Of The Sugar Remaining 
Hope This Helps!

Answer 2

I am assuming 5 9 and 3 9 is 5/9 and 3/9. So if you add the numerators together you get 8 then you keep the denominator which gives you the answer.

Answer: 8/9 bag of sugar