Question 813454
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Hi,
In an isosceles triangle, a leg is 3 more than 1/3 of the base "x"
Question states***
2(x/3 + 3) + x = 31
Solving for x
 {{{(5/3)x = 25}}}
  {{{x = (3/5)25}}}
         x = 15, the length of each of the side is (15/3 +3) = {{{highlight(8)}}}
CHECKING our Answer***
 8 + 8 + 15 = 31