Answer:
[tex][-\frac{43}{3};\frac{8}{3} ].[/tex]
Step-by-step explanation:
[tex]\left \{ {{y-x=17} \atop {12y+3x=-11}} \right. \ => \ \left \{ {{3y-3x=51} \atop {12y+3x=-11}} \right. \ => \ \left \{ {{x=-\frac{43}{3} } \atop {y=\frac{8}{3} }} \right.[/tex]
