It would be: 20/7 = 2 6/7
In short, Your Answer would be 2 6/7
Hope this helps!
Ab is obtuse acute to AD
DC is perpendicular parallel to AB
Answer: just want points tbh
Step-by-step explanation:
Hey!
Let's write the problem.

Add like terms...

Add

to both sides.


Divide both sides by

.

Our final answer would be,

Thanks!
-TetraFish