Answer:3/7Step-by-step explanation:(1/3)/(7/9)[(1/3)/(7/9)]*[(9/7)/(9/7)] Note: [(9/7)/(9/7)] = 1. We can multiply this times anything we want. But note what happens to the denominator. Since (9/7) is the inverse of (7/9), the two terms cancel: (7/9)*(9/7) = 1[(1/3)/(7/9)]*[(9/7)/(9/7)][(1/3)*(9/7)/(7/9)*(9/7)][(1/3)*(9/7)/(1)](1/3)*(9/7) = 9/21 or 3/7 when simplified