D)7/15 * 10/21 = 1/3 * 2/3 =2/6
E)2 3/4 * 1/2 = 11/4 * 1/2 = 11/8 = 1 3/8
F)5/9 * 4 1/10 = 5/9 * 41/10 = 1/9 * 41/ 2 = 41/18 = 2 5/18
G)2 1/2 * 5 1/3= 5/2 * 16/3 = 5/1 * 8/3 = 40/3 = 13 1/3
H)3 3/4 * 4 1/5 = 15/4 * 21/5 = 3/4 * 21/1= 63/4 = 15 3/4
I)5 6/7 * 4 2/3 = 41/7 * 14/3 = 41/1 * 2/3 = 82/3 = 27 1/3
J)4/5 * 2/9 * 6/7 * 7/8 = 1/5 * 1/3 * 2/1* 1/4= 2/60= 1/30
L)1 5/8 * 3 1/5 * 2/26 = 13/8 * 16/5 * 2/26= 1/1 *2/5 * 2/2 = 4/10 = 2/5
