Answer:
3
Explanation:
Since all three angles are equal, it is an equilateral triangle.
Therefore all three sides are also equal in length
Equate any two lengths:
6x - 3 = 5x
6x - 5x = 3
x = 3
5x = 3x + 6
5x - 3x = 6
2x = 6
x = 6/2
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