Пожалуйста помогите решить систему уравнений методом подстановки: 4x + 15y = -42 -6x + 2y = -32

[latex] \left \{ {{4x+15y=-42} \atop {-6x+2y=-32}} \right. \\ \left \{ {{4x+15y=-42} \atop {2y=6x-32}} \right. \\ \left \{ {{4x+15y=-42} \atop {y=3x-16}} \right. \\ \left \{ {{y=3x-16} \atop {4x+15(3x-16)=-42}} \right. \\ \left \{ {{y=3x-16} \atop {4x+45x-240=-42}} \right. \\ \left \{ {{y=3x-16} \atop {49x=198}} \right. \\ \left \{ {{y=3x-16} \atop {x= \frac{198}{49} }} \right. \\ \left \{ {{y= \frac{3*198}{49}-16 } \atop {x= \frac{198}{49} }} \right. [/latex] [latex]\left \{ {{x= \frac{198}{49}} \atop {y=- \frac{190}{49} }} \right. \\ OTBET: ( \frac{198}{49} ;-\frac{190}{49} )[/latex]