1) 5696 : (91 - 75) - 2 * 117 = 122
1) 91 - 75 = 16
2) 5696 : 16 = 356
3) 2 * 117 = 234
4) 356 - 234 = 122
2) 6180 : (82 - 67) - 3 * 109 = 85
1) 82 - 67 = 15
2) 6180 : 15 = 412
3) 3 * 109 = 327
4) 412 - 327 = 85
3) 126 - х = 89
х = 126 - 89
х = 37
4) х + 286 = 373
х = 373 - 286
х = 87