-3x-8y=27 8y-x=25 помогите решит

[latex] \left \{ {{-3x-8y=27} \atop {8y-x=25}} \right. \left \{ {{-4x=52} \atop {8y-x=25}} \right. \left \{ {{x=-13} \atop {8y=12}} \right. \left \{ {{x=-13} \atop {y=\frac{3}{2}}} \right. [/latex]