\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Important: \r\n" );
document.write( "When all variables occur only as denominators, then\r\n" );
document.write( "DO NOT CLEAR OF FRACTIONS!!!. Instead leave the fractions and\r\n" );
document.write( "use elimination:\r\n" );
document.write( "\r\n" );
document.write( "To eliminate y, multiply the second equation through by 3\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Add corresponding terms:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Take reciprocals of both sides:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Multiply both sides by 11\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Now substitute for in one of the original\r\n" );
document.write( "equations:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "NOW it is OK to clear of fractions,\r\n" );
document.write( "Multiply through by 10y:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" );
document.write( "![\"\"](\"/images/stars/stars-13.gif\")
