[tex]x = - \frac{14}{5} + \frac{3}{5}y[/tex]

[tex]3(x + 5) + 4(y + 9) = 60[/tex]

[tex]3( - \frac{14}{5} + \frac{3}{5}y + 5) + 4(y + 9) = 60[/tex]

[tex]y = 3[/tex]

[tex]x = - \frac{14}{5} + \frac{3}{5} \times 3[/tex]

[tex]x = - 1[/tex]