Пошаговое объяснение:
1 1/5х = 1 1/3*5 1/4 / 2 1/3
6/5х = 4/3*21/4 / 7/3
6/5х = 84/12 / 7/3
6/5х = 7 : 7/3
6/5х = 7 * 3/7
6/5х = 21/7
6/5х = 3
х = 3 : 6/5
х = 3 * 5/6
х = 15/6
х = 2 3/6
х = 2 1/2
