What does X and Y equal

Answer:
[tex]8x + 5y = 24[/tex]
[tex]y = - 4x(given)......(i)[/tex]
[tex]now[/tex]
[tex]putting \: the \: value \: of \: y[/tex]
[tex]8x - 4x = 24 [/tex]
[tex]4x = 24[/tex]
[tex]x = 6[/tex]
[tex]in \: equation(i)[/tex]
[tex]y = - 4 \times 6 = - 24[/tex]