Answer:
Perimeter: 14a+2b
Tickets:7x+6
Step-by-step explanation:
Perimeter: Add all the functions together
Tickets: Subtract 15x+1 by 8x-5.
Combine like terms:
-5d+5e or 5e-5d
If you want, you can factor out the common 5:
5(e-d) is your answer
Your answer will be:
The total number of marbles that are not black.
