Describe how CPCTC would help you here. (8x-6) D T Students DE VOLTRON

CPCTP = Corresponding parts of congruent triangles are congruent:
That means that since both angles are congruent (equal) the sides are also congruent:
8x+6 = 3x+9
Solve for x
8x-3x = 9-6
5x= 3
x= 3/5