Explicación paso a paso:
a. [tex]\left \{ {{2x + 3y=5} \atop {x - 2y=13}} \right.[/tex]
[tex]\left \{ {{2x + 3y=5} \atop {x=13 + 2y}} \right.[/tex]
[tex](x;y) = (-3;7)[/tex] ........... RPTA
b. [tex]\left \{ {{3x - y=8} \atop {x - 2y =6}} \right.[/tex]
[tex]\left \{ {{y=-8 + 3x} \atop {x - 2y=6}} \right.[/tex]
[tex](x;y) = (2;-2)[/tex] ........... RPTA
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Explicación paso a paso:
a. [tex]\left \{ {{2x + 3y=5} \atop {x - 2y=13}} \right.[/tex]
[tex]\left \{ {{2x + 3y=5} \atop {x=13 + 2y}} \right.[/tex]
[tex](x;y) = (-3;7)[/tex] ........... RPTA
b. [tex]\left \{ {{3x - y=8} \atop {x - 2y =6}} \right.[/tex]
[tex]\left \{ {{y=-8 + 3x} \atop {x - 2y=6}} \right.[/tex]
[tex](x;y) = (2;-2)[/tex] ........... RPTA