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2014-11-10T14:50:42+02:00
350x :10 + 2x=185 35x + 2x=185 37x=185 x=185:37 x=5
2014-11-10T14:53:45+02:00
350x :10 + 2x=185
 35x + 2x=185
 37x=185
 x=185:37
 x=5
Si Apoi S={5}
1 5 1