document.write( "Question 1193349: Given isosceles trapezoid ABCD, find x, if
\n" ); document.write( "AC = 3(x + 7)and BD = 8(x − 6) \n" ); document.write( "

Algebra.Com's Answer #825363 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"AC\"$ and $\"BD\"$ are the diagonals; the diagonals of an isosceles trapezoid are $\"congruent\"$ .\r
\n" ); document.write( "\n" ); document.write( " $\"AC+=+BD+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3%28x+%2B+7%29+=+8%28x-6%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3x+%2B+21+=+8x+-48\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"48+%2B+21+=+8x+-3x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"69+=+5x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=69%2F5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=13.8\"$ \r
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