document.write( "Question 951143: In triangle ABC, D is the midpoint of line AB and E is the midpoint of line BC. If AC= 3x-15 and DE= 6, what is the value of x? \n" ); document.write( "
Algebra.Com's Answer #580813 by edjones(8007)\"\" \"About 
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The triangles ABC and DEB are similar. The sides of ABC are twice as long as DEB.
\n" ); document.write( "3x-15=2*6
\n" ); document.write( "3x-15=12
\n" ); document.write( "3x=27
\n" ); document.write( "x=9
\n" ); document.write( ".
\n" ); document.write( "Ed
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