document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=533640>Question 533640</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum of sally's age plus twice tomas's age is 12. the difference of sally's age and tomas' is 3. </SPAN>\n" );
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document.write( "Let<BR>\n" );
document.write( "Sally's age = s<BR>\n" );
document.write( "Tomas's age = t\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The sum of sally's age plus twice tomas's age is 12<BR>\n" );
document.write( "s+2t=12...........(1)<BR>\n" );
document.write( "The difference of sally's age and tomas' is 3.<BR>\n" );
document.write( "s-t=3<BR>\n" );
document.write( "s=3+t.........(2)<BR>\n" );
document.write( "Put the value of s from (2) to (1)<BR>\n" );
document.write( "s+2t=12...........(1)<BR>\n" );
document.write( "3+t+2t=12<BR>\n" );
document.write( "3t=12-3<BR>\n" );
document.write( "3t=9<BR>\n" );
document.write( "t=9/3<BR>\n" );
document.write( "t=3<BR>\n" );
document.write( "Put the value of t in (2)<BR>\n" );
document.write( "s=3+t<BR>\n" );
document.write( "s=3+3<BR>\n" );
document.write( "s=6\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Sally's age = s = 6<BR>\n" );
document.write( "Tomas's age = t = 3<BR>\n" );
document.write( " </SPAN>\n" );
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