Решите систему уравнений 2х+5у=-1 3х-2у
-x+5y=-1 -x=8 y=1 jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj