Estimate the sum of fractions and write <,>, or = comparing with 1.
5/7+2/3()1
4/9+3/5 ()1
5/7 + 2/3 = 31/21, which is greater than 1 (31/21 > 1)
4/9 + 3/5 = 47/45, which is also greater than 1 (47/45 > 1)
5/7+2/3()1
4/9+3/5 ()1
4/9 + 3/5 = 47/45, which is also greater than 1 (47/45 > 1)