document.write( "Question 316922: Solve the following systems of equations:\r
\n" ); document.write( "\n" ); document.write( "4p-6Q+7r = -7
\n" ); document.write( "2p+3Q-5r =7
\n" ); document.write( " 8p-2r=6
\n" ); document.write( "

Algebra.Com's Answer #226840 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
[A]=\"%28matrix%283%2C3%2C4%2C-6%2C7%2C2%2C3%2C-5%2C8%2C0%2C-2%29%29\"
\n" ); document.write( "[x]=\"%28matrix%283%2C1%2CP%2CQ%2CR%29%29\"
\n" ); document.write( "[b]=\"%28matrix%283%2C1%2C-7%2C7%2C6%29%29\"
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "det[A]=\"24\"
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "[A]inv=\"%281%2F24%29%2A%28matrix%283%2C3%2C-6%2C-12%2C9%2C-36%2C-64%2C34%2C-24%2C-48%2C24%29%29\"
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "[x]=\"%28matrix%283%2C1%2C1%2F2%2C1%2F3%2C-1%29%29\"
\n" ); document.write( "
\n" );