Answer:
[tex]y = - 3x[/tex]
Step-by-step explanation:
1. Factor out common terms in the first two terms, then in the last two terms.
[tex] \frac{y(y - 3x) + 9(y - 3x)}{y + 9} [/tex]
2. Factor out the common term y-3xy.
[tex] \frac{(y - 3x)(y + 9)}{y + 9} [/tex]
3. Cancle y+9.
[tex]y = - 3x[/tex]
Therefor the answer is,
[tex]y = - 3x[/tex]