Question

Решите систему уравнений.
x+2y=3
2x+y=1

Answer 1

$\left \{ {{x+2y=3} \atop {2x+y=1}} \right.</p> <p>\left \{ {{x=3-2y} \atop {2x+y=1}} \right.</p> <p>\left \{ {{x=3-2y} \atop {y=5/3}} \right.</p> <p>\left \{ {{x=-1/3} \atop {y=5/3}} \right.$