Question

Решите уравнение |x-2007| = 2

Answer 1

x-2007=2
x=2+2007
x=2009

Answer 2

х-2007=2                                                                                                                  х=2007+2                                                                                                                  х=2009                                                                                                                    пр-ка                                                                                                                        2009-2007=2                                                                                                                         2=2