Question

Решите систему уравнений $left { {{2x+3y=1} atop {x-2y=-3}} right.$

Answer 1

2x+3y=1;
x-2y=-3;

2x+3y=1;
x=2y-3.

4y-6+3y=1; 7y=7; y=1
x=2y-3; x=-1