Respuesta:
[tex]x= -\frac{56}{11} ; y=\frac{14}{11}[/tex]
Explicación paso a paso:
[tex]-2x + 3y = 14... (I)[/tex]
[tex]3x + y =-14...(II)[/tex]
Despejando "x" en (II):
[tex]3x + y = -14[/tex]
[tex]3x = -14 - y[/tex]
[tex]x = \frac{-14-y}{3}[/tex]
Reemplazando en (I):
[tex]-2x + 3y = 14[/tex]
[tex]-2(\frac{-14-y}{3} ) + 3y = 14[/tex]
[tex]\frac{28 +2y }{3} = 14 - 3y[/tex]
[tex]28 +2y = 3(14-3y)[/tex]
[tex]28 + 2y = 42 - 9y[/tex]
[tex]2y + 9y = 42 - 28[/tex]
[tex]11y= 14[/tex]
[tex]\boxed{\bf{y=\frac{14}{11} }}[/tex]
Hallamos "x":
[tex]3x + \frac{14}{11} = -14[/tex]
[tex]3x = -14-\frac{14}{11}[/tex]
[tex]3x = \frac{-168}{11}[/tex]
[tex]11(3x) = -168[/tex]
[tex]33x= -168[/tex]
[tex]x=\frac{-168}{33}[/tex]
[tex]\boxed{\bf{x= -\frac{56}{11} }}[/tex]
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Respuesta:
[tex]x= -\frac{56}{11} ; y=\frac{14}{11}[/tex]
Explicación paso a paso:
[tex]-2x + 3y = 14... (I)[/tex]
[tex]3x + y =-14...(II)[/tex]
Despejando "x" en (II):
[tex]3x + y = -14[/tex]
[tex]3x = -14 - y[/tex]
[tex]x = \frac{-14-y}{3}[/tex]
Reemplazando en (I):
[tex]-2x + 3y = 14[/tex]
[tex]-2(\frac{-14-y}{3} ) + 3y = 14[/tex]
[tex]\frac{28 +2y }{3} = 14 - 3y[/tex]
[tex]28 +2y = 3(14-3y)[/tex]
[tex]28 + 2y = 42 - 9y[/tex]
[tex]2y + 9y = 42 - 28[/tex]
[tex]11y= 14[/tex]
[tex]\boxed{\bf{y=\frac{14}{11} }}[/tex]
Hallamos "x":
[tex]3x + y = -14[/tex]
[tex]3x + \frac{14}{11} = -14[/tex]
[tex]3x = -14-\frac{14}{11}[/tex]
[tex]3x = \frac{-168}{11}[/tex]
[tex]11(3x) = -168[/tex]
[tex]33x= -168[/tex]
[tex]x=\frac{-168}{33}[/tex]
[tex]\boxed{\bf{x= -\frac{56}{11} }}[/tex]