+80 8/9 of Nadia's cookies is the same number as 2/3 of Sally's cookies. Express the number of cookies Nadia has as a fraction of thre total number of cookies.
+36916 8/9 n = 2/3 s
s = 4/3 n
n+s = total number
n / (n + 4/3 n) = Nadia fraction of total
n / 7/3 n
Nadia fraction = 3/7
