{2x+7y-44=0 {2x-3y=-36

             259        :   24

             24            ---------

           ----------        10      ( в остатке 19)

               19

   или    259      : 24

             24         ----------

           -------        10. 791.........

               190

               168

            ----------

                 220

                 216

              ---------

                     40