1. (19/15 - 11/15) + х = 8/15
19/15 - 11/15 = 8/15
х = 8/15 - 8/15
х = 0
2. 5/9 + х = 8/9 - 1/9
8/9 - 1/9 = 7/9
х = 7/9 - 5/9
х = 2/9
1. (19/15 - 11/15) + х = 8/15
19/15 - 11/15 = 8/15
х = 8/15 - 8/15
х = 0
2. 5/9 + х = 8/9 - 1/9
8/9 - 1/9 = 7/9
х = 7/9 - 5/9
х = 2/9