Предмет: Математика, автор: r81703672

2. Розв'яжіть рiвняння: a) 657-(2x+120) =353; 6) 84: (x-13)+14=98; в) 789-(4x+26252SE Muig r) (853-x):19-16=20; A) 165+(7x-8)=255.​

Ответы

Автор ответа: dashauwu666
0

Відповідь:

Покрокове пояснення:657-(2х+120)=353

                                         2х+120=657-353=304

                                         2х+120=304

                                         2х=304-120=184

                                         2х=184

                                          х=2*184

                                          х=368

84:(х-13)+14=98

84:(х-13)=98-14=84

х-13=84:14=6

х-13=6

х=19


dashauwu666: даю возможность подумать самому над другими вопросами если что допишу
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