№1:
а). 3/10 * 20/9 = 2/3
б). 36/7 * 2 = 72/7
в). 10/9 * 9/5 = 2
г). 8/7 : 16/7 = 8/7 * 7/16 = 1/2 = 0,5
д). 48/5 : 6 = 48/5 * 1/6 = 8/5 = 1,6
е). 8/3 : 16/9 = 8/3 * 9/16 = 3/2 =1,5
№2:
а). 10/3*6/5- 46/11:2=4 - 46/11 * 1/2 = 4 - 23/11 = 4 - 2 цел 1/11=1 цел10/11
б). 24/7 * 77/9 - 24/7 * 59/9 = 88/3 - 472/21 = 616/21 - 472/21 = 144/21 = 6цел 18/21
№3:
13/11*15/13*17/15*19/17*21/19*23/21 = 23/11