Answer:
x = 8
Step-by-step explanation:
Since the triangle is equilateral, then the 3 sides are congruent.
Equate any 2 sides and solve for x, that is
7x - 29 = 5x - 13 ( subtract 5x from both sides )
2x - 29 = - 13 ( add 29 to both sides )
2x = 16 ( divide both sides by 2 )
x = 8
The triangle is equilateral, thus the 3 angles are congruent, thus
The measure of each angle is 60°
