what are the side lengths of an isosceles triangle if one side is 5 more than the other sides?

Question

The perimeter of the isosceles triangle is 86 centimeters 

Answer 1

x + x + x + 5 = 86

3x = 81

x = 27

 

27, 27, 32

Answer 2

Let x = one of the two equal sides; then the 3rd side is x + 5

 

The perimeter is 3x +5 = 86.

 

3x = 81 => x = 27, the 3rd side then is 32.