Hello,
Solving:
[tex] \frac{ - 7}{12} = \frac{y}{ - 36} \\ \frac{ - 7 \times ( - 36)}{12} = y \\ - 7 \times ( - 36) = 12y \\ 252 = 12y \\ 12y = 252 \: \: \: | \div 12 \\ \\ y = 21 \: \: \: \: \: \: \: \: \: \: \: \: result[/tex]
Answer: C, 21
Hope this helps.
r3t40