Question

Решите систему уравнений: x+2y=3
{
2x=2y+6

Answer 1

$\left \{ {{x+2y=3} \atop {2x=2y+6}} \right. \left \{ {{x+2y=3} \atop {2x-2y=6}} \right. \\3x=9\\x=3\\3+2y=3\\2y=0\\y=0\\(x_1;y_1)=(3;0)$