Пошаговое объяснение:
2. 1/9 - 1. 2/3х = 1. 5/18
1. 2/3х = 2. 1/9 - 1. 5/18
1. 2/3х = 2. 2/18 - 1. 5/18
1. 2/3х = 1. 20/18 - 1. 5/18
1. 2/3х = 15/18
5/3х = 5/6
х = 5/6 : 5/3
х = 5/6 * 3/5
х = 3/6
х = 1/2
