Simplifier chaque fraction a) 6|8 b) 21|14 c) 20|8 d) 15|45 e) 36|63 f) 36|42

6/8 = 2*3/4*3 = 2/4 = 2*1/2*2 = 1/2

21/14 = 7*3/7*2 = 3/2

20/8 = 4*5/4*2 = 5/2

15/45 = 5*3/5*9= 3/9 = 3*1/3*3 = 1/3

36/63 = 9*4/9*7 = 4/7

36/42 = 6*6/6*7 = 6/7