document.write( "Question 312398: 10x+12y+15z=315
\n" ); document.write( "12x+15y+19z=389
\n" ); document.write( "56x+69y+az=1797\r
\n" ); document.write( "\n" ); document.write( "Find a?
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Algebra.Com's Answer #223343 by Fombitz(32388)\"\" \"About 
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\n" ); document.write( "What happens to the linear system when the value of a is determined.
\n" ); document.write( "Does it become indeterminate?
\n" ); document.write( "Are you looking for a specific integer solution?
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