Question

$\left \{ {{2x+y=4} \atop {x-2y=3}} \right.$

Answer 1

$\left \{ {{2x+y=4} \atop {x-2y = 3}} \right. ; \left \{ {{4x+2y=8} \atop {x-2y = 3}} \right. ;$ Метод сложения :  $\left \{ {{5x=11} \atop {x-2y = 3}} \right.$ ,отсбда x = 2.2 ,y = -0.4

Ответ : (2.2;-0.4)