9y-3y=666                                                                                                                       6y=666                                                                                             ...

9y-3y=666                                                                                                                       6y=666                                                                                                                           у=666:6                                                                                                                          у=156                                                                                                                                                                                                                                                                          3х+5х=1632                                                                                                                    8х=1632                                                                                                                          х=1632:8                                                                                                                         х=204                                                                                                                                                                                                                                                                                                  
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9y-3y=666 6y=666 y=666/6 y=111
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