Question

{2x-5y=5 , {3x-2y=13 система уравнений​

Answer 1

Ответ:

(x,y) = (5;1)

Объяснение:

$\displaystyle \left \{ {{2x-5y=5} \atop {3x-2y=13}} \right. < = > \left \{ {{y=\frac{2x-5}{5} } \atop {3x-2(0,4x-1)=13}} \right. < = > \left \{ {{y=0,4x-1} \atop {3x-0,8x+2=13}} \right. < = > \left \{ {{y=0,4x-1} \atop {2,2x=11|:5}} \right. < = > \left \{ {{y=0,4*5-1} \atop {x=5}} < = > \left \{ {{y=2-1} \atop {x=5}} \right. < = > \left \{ {{y=1 } \atop {x=5}}$