Respuestas

  • Usuario de Brainly
2013-10-14T00:18:17+02:00
(2kg) (x)  +  (5kg)(y)=835
(4) (x)  +(2) (y )= 1285
-2(2x + 5y =835)
4x + 5y =1285
-4x -10y =-1670
4x+5y = 1285
------------------------
-5y=-385
5y=385
y=77
reeplazo
2x + 5(77)=835
x=225



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