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Si, -3y = 2 entonces y = -2/3 sustituyendo en la primera
x + -2/3 = 5
x = 5 + 2/3
x = 17/3
R/ x = 17/3 y = -2/3
-3y=2
3x+3y=15
-3y=2
---------------
3x=17
x=17/3
sustituimos x en ec1
x+y=5
17/3+y=5
y=5-17/3
y=-2/3
Respuesta:
X=17/3
Y=-2/3
Saludos, espero haberte ayudado!