Respuesta:
x+y=3
y= 3-x = 3 - 7/4= 5/4
REEMPLAZAMOS EN :
2x-2y=1
2x= 1 +2y
2x = 1 + 6 - 2x
4x= 7
x= 7/4
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Respuesta:
x+y=3
y= 3-x = 3 - 7/4= 5/4
REEMPLAZAMOS EN :
2x-2y=1
2x= 1 +2y
2x = 1 + 6 - 2x
4x= 7
x= 7/4