Answer:
[tex] \frac{ - 8}{11} = \frac{12}{x} \\ cross \: multipliation \\ 12 \times 11 = - 8 \times x \\ x = \frac{12 \times 11}{ - 8} = \frac{3 \times 11}{ - 2} = \frac{33}{ - 2} = - 16.5[/tex]