как решить уровнение (4n+12):8=136

4n + 12 = 136 * 84n + 12 = 10884n = 1088 - 124n = 1076n = 1076 : 4n = 269

4n+12=136:8                                                                                                                 4n+12=17                                                                                                                      4n=17-12                                                                                                                       4n=5