Answer:
11x+4y-9
Step-by-step explanation:
add like terms
3x+8x=11x
5y-y=4y
[tex]11x+4y-9\\[/tex]
1) Remove parentheses.
[tex]3x+5y+8x-y-9[/tex]
2) Collect like terms.
[tex](3x+8x)+(5y-y)-9[/tex]
3) Simplify.
[tex]11x+4y-9[/tex]
