Answer:
15>x*3
i don't know what you tried to say but this is what I think the answer is.
Slope is the best i can think of
27 - 9x +15y
Factor out common term 3 :
3(9-3x+5y)
hope this helps!
You would say that the side ADAC is congruent to ABCA because the two triangles where it is split in half are congruent as well.
I see 9! 20 characters lol
