The answer is 10 because all the angles are equal making it a equilateral triangle.
Therefore, the sides are all equal to one another, 3x - 8 = 5x - 20.
You just solve for x and get 6. You then plug in 6 for x and evauluate the equation, getting 10.
Answer:
10
Step-by-step explanation:
This is an equilateral triangle ( because all 3 angles have the same measure)
So 3 all sides are equal, therefore:-
5x - 20 = 3x - 8
2x = 12
x = 6
So DE = 3(6) - 8
= 10 units
