Решите систему уравнения х-у=2 2х-3у=-1

[latex] \left \{ {{x=2+y} \atop {2(2+y)-3y=-1}} \right. [/latex] [latex] \left \{ {{x=2+y} \atop {4+2y-3y=-1}} \right. [/latex] [latex] \left \{ {{x=2+y} \atop {4-y=-1}} \right. [/latex] [latex] \left \{ {{x=2+y} \atop {-y=-5}} \right. [/latex] [latex]\left \{ {{x=7} \atop {y=5}} \right.[/latex]