Question 234342
4 8/7+7/9
First convert the first mixed fraction to an improper fraction:
(4*7+8)/7=(28+8)/7=36/7
36/7+7/9 
Now find a common denominator and combine the fractions.
(36*9+7*7)/7*9=(324+49)/63=373/63  or 5 58/63 ans