Х - 256 873 = 482 369
х = 482 369 + 256 873
х = 739 242
-----------------------------------------
739 242 - 256 873 = 482 369
482 369 = 482 369
234 651 + х = 852 134
х = 852 134 - 234 651
х = 617 483
-------------------------------------------
234 651 + 617 483 = 852 134
852 134 = 852 134
х : 28 = 35 687
х = 35 687 * 28
х = 999 236
--------------------------------
999 236 : 28 = 35 687
35 687 = 35 687
15 * х = 12 645
х = 12 645 : 15
х = 843
---------------------------
15 * 843 = 12 645
12 645 = 12 645