document.write( "Question 427666: Find values of x and y for which ABCD must be a parallellogram.
\n" ); document.write( "3y+3= x-11
\n" ); document.write( "5y-6=x+2
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Algebra.Com's Answer #297412 by Alan3354(69443)\"\" \"About 
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How are A,B,C & D related to the 2 equations? \n" ); document.write( "
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