document.write( "Question 119755: Sam and Paul have 480 marbles between them. SAm arranges them in columns with 6 in each column, and paul arranges them with 9 in each column. The total number of columns is 72. Express the above information in the form of an algebraic expression. \n" ); document.write( "
Algebra.Com's Answer #87759 by checkley71(8403)\"\" \"About 
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X+Y=72 OR X=72-Y
\n" ); document.write( "6X+9Y=480
\n" ); document.write( "6(72-Y)+9Y=480
\n" ); document.write( "432-6Y+9Y=480
\n" ); document.write( "3Y=480-432
\n" ); document.write( "3Y=48
\n" ); document.write( "Y=48/3
\n" ); document.write( "Y=16 ROWS FOR PAUL'S MARBLES.
\n" ); document.write( "72-16=56 ROWS FOR SAM'S MARBLES.
\n" ); document.write( "PROOF
\n" ); document.write( "6*56+9*16=480
\n" ); document.write( "336+144=480
\n" ); document.write( "480=480
\n" ); document.write( "
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