Question 622883

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Hi
two sides of a triangle have the same length{{{highlight(x)}}}. 
the third side measures <u>5m less than twice the common length</u>. 
the perimeter of the triangle is  23m. 
what are the lengths of all three sides?
 x + x + (2x-5) = 23cm
     4x = 28cm
  x = 7cm   sides are 7cm, 7cm and 9cm   (14-5)
and...
CHECKING our Answer***
 7cm  + 7cm + 9cm = 23cm