Question 1164812
{{{drawing(400,736/3,-30,30,-5,31.8,

triangle(-25.5,0,25.5,0,0,26.80951324),
locate(-5,0,"????"),locate(-13.4,16,x),locate(13,16,x)  )}}}
<pre>
That's the picture for your problem.  But I won't do yours for you.
Instead I'll do one exactly like yours step-by-step that you can use
as a model.  Here's the one I'll do for you:
</pre>
the perimeter of the triangle is 146, two of the sides are equal and 
the third side is 10 more than the SUM OF THE TWO equal sides. Find 
the length of the third side.<pre>
{{{drawing(320,176,-30,30,-5,31.8,

triangle(-25.5,0,25.5,0,0,26.80951324),
locate(-5,0,2x+10),locate(-13.4,16,x),locate(13,16,x)  )}}} {{{matrix(7,3,

x+x+2x+10,""="",146,
4x+10,""="",146,
4x,""="",136,
x,""="",34,
third,side,""="",
2x+10,""="",2(34)+10,
68+10,""="",78)}}}

Edwin</pre>