Question

Решите систему уравнений 2х=y х+2y=10

Answer 1

$\left \{ {{2x-y=0|2} \atop {x+2y=10}} \right.$

$\left \{ {{4x-2y=0} \atop {x+2y=10}} \right.$

$\left \{ {{4x-2y=0} \atop {5x=10}} \right.$

$\left \{ {{-2y=-8} \atop {x=2}} \right.$

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