document.write( "Question 619373: let a = -5a1 + 4a2
\n" ); document.write( " -8a1 + 7a2
\n" ); document.write( "find :
\n" ); document.write( " 13
\n" ); document.write( " A .
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Algebra.Com's Answer #389604 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
I don't know what that means. \n" ); document.write( "
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