SOLUTION: A triangle having two sides are equal has a perimeter measuring 40. If the remaining side is 8 less than twice the length of either side. Find the lengths of the 3 sides of the tri

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Question 1170286: A triangle having two sides are equal has a perimeter measuring 40. If the remaining side is 8 less than twice the length of either side. Find the lengths of the 3 sides of the triangle.
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let x be the length of either of the two congruent sides.


Then the third side is  (2x-8), and you have this equation for the perimeter


    x + x + (2x-8) = 40.

   
From the equation


    4x - 8 = 40

    4x     = 40 + 8 = 48

     x              = 48/4 = 12.


ANSWER.  The sides are  12 units, 12 units and  2*12-4 = 20 units long.

Solved.

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I remember your previous version, mistakenly written.

Glad that you found and fixed your error.