Respuesta:
a) x = -2;y = -7
b) x = -3; y = 3
c) x= -12/17; y = 42/17
d) x = -5/4; y = 15/14
e) x = 4; y = 47/6; z = 7/6
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Respuesta:
a) x = -2;y = -7
b) x = -3; y = 3
c) x= -12/17; y = 42/17
d) x = -5/4; y = 15/14
e) x = 4; y = 47/6; z = 7/6