(1 13/14)х - 2 2/3 = 1 2/715х/14 - 8/3 = 9/715х/14 =9/7 + 8/315х/14 = 27/21 + 56/2115х/14 = 83/21х = 83/21 : 15/14х = 83/21 • 14/15х = 83/3 • 2/15х = 166/45х = 3 31/45(2 2/7) • (1/3 х + 1/15)=2,49/7 • х/3 + 9/7 • 1/15 = 24/103х/7 + 3/35 = 12/53х/7 = 12/5 - 3/353х/7 = 84/35 - 3/353х/7 = 81/35х = 81/35 : 3/7х = 81/35 • 7/3х = 81/15х = 5,4