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2)y=(3-3x)/2
metodo de igualacion
(8-5x)/3=(3-3x)/2
2(8-5x)=3(3-3x)
16-10x=9-9x
-10x+9x=9-16
-x=-7
x=7
remplasamos en la ecuacion 2
y=(3-3(7))/2
y=(3-21)/2
y=18/2
Y=9
respuesta:x=7 y=9