a 8/1 * 2/1 = 16 b 7/1 * 3/2 = 21/2 = 10,5 c 15/1*4/7 = 60/7= 8 i 4/7 d 20/1*8/3 = 160/3 = 53 i 1/3 prosze ;D

a) 8 : 1/2 = 8/1 * 2/1 = 16/1 = 16b) 7; 2/3 = 7/1 * 3/2 = 21/2 = 10 i 1/2 c) 15 : 7/4 = 15/ 1 * 4/7 = 45/7= 6 i 3/7d) 20 : 3/8 = 20/1 * 8/3= 160/3 = 53 i 1/3myślę że pomogłam