document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1005807>Question 1005807</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 6x+5y=30<BR>\n" );
document.write( "x=y+5 <BR>\n" );
document.write( "how do we solve and prove? </SPAN>\n" );
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document.write( "6x + 5y = 30 and<BR>\n" );
document.write( "x = y + 5<BR>\n" );
document.write( "we should substitute the second equation into the first and get<BR>\n" );
document.write( "6(y + 5) + 5y = 30<BR>\n" );
document.write( "6y + 30 + 5y = 30<BR>\n" );
document.write( "11y + 30 = 30<BR>\n" );
document.write( "11y = 0   and<BR>\n" );
document.write( "y = 0<BR>\n" );
document.write( "x is the 5. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );