Решение систем линейных неравенств.
Выясните, совместна ли данная система неравенств и, если "да", то найдите общее решение и частное решение двумя способами: методом исключения переменных и методом сведения к решению системы линейных уравнений:

                                                                           пример решения
              1)                                                               2)





             3)                                                               4)






             5)                                                               6)






            7)                                                               8)





            9)                                                              10)





           11)                                                            12)





          13)                                                            14)






          15)                                                            16) 






          17)                                                           18)






          19)                                                           20)     

Решение систем линейных уравнений с параметром.
Исследуйте систему и решите ее в зависимости от значений буквенных параметров:
                          
                                                                   пример решения

            1)                                                               2)





            3)                                                               4)






            5)                                                               6)






            7)                                                               8)





            9)                                                              10)





           11)                                                            12)





           13)                                                            14)






           15)                                                            16) 






           17)                                                           18)






          19)                                                           20)                               




                                                                                       
 
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