2) x= 5/6; y= 5 1/2; z= 4 3/10
Объяснение:
7/15 * 1 11/14 = 7/15 * 25/14 = 5/6 - x
5/6 + 4 2/3 = 5/6 + 4 4/6 = 5 1/2 - y
5 3/6 - 1 1/5 = 33/6 - 6/5 = 165/30 - 36/30 = 129/30 = 4 3/10 - z
