Addition subtraction multiplication or division
Notice the picture below
now, we know their perimeter are the same for both
thus 4(a+4) = 6a
solve for "a"
Answer:
D.
Step-by-step explanation:

18x-24xy
You have to find a factor that can go into both variables, in this case 9x
The answer is 9x(2-4y)
:)