Question 27686
Let the length of one of the equal sides be x, then the length of the base is x-5. Now you can write the equation for the perimeter (P = 37") of the isosceles triangle.

{{{x + x + (x-5) = 37}}} Simplify and solve for x.
{{{3x-5 = 37}}} Add 5 to both sides of the equation.
{{{3x = 42}}} Divide both sides by 3.
{{{x = 14}}}inches.