Exercise 3a Find the difference in these fractions. 4 3 5 1 2 1 a) b) c) 5 10 8 4 3 9 8 1 4 5 7 1 d) e) f) 5 6 5 12 10 5 g) 2 1 h) 7 1 I) 4 5 7 4 9 2 7 21 12