Answer:
x = 14
Step-by-step explanation:
Since the triangle is isosceles, then the legs are congruent, both 4x - 5
Sum the lengths of the sides and equate to 116
4x - 5 + 4x - 5 + x = 116 , that is
9x - 10 = 116 ( add 10 to both sides )
9x = 126 ( divide both sides by 9 )
x = 14
